Chinastark/bird_dataset huggingface dataset:
Database: world_development_indicators
Question: What percentage of countries in South Asia have the Life expectancy at birth, female (years) greater than 50?
Evidence: South Asia is the name of the region; IndicatorName = 'Life expectancy at birth, female (years)'; greater than 50 refers to Value>50; DIVIDE(COUNT(CountryCode where IndicatorName = 'Life expectancy at birth, female (years)'; Value>50; Region = 'South Asia'), COUNT(CountryCode where Region = 'South Asia')) as percentage;
SQL: SELECT CAST(SUM(CASE WHEN T2.value > 50 THEN 1 ELSE 0 END) AS REAL) * 100 / COUNT(T1.CountryCode) FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.Region = 'South Asia' AND T2.IndicatorName = 'Life expectancy at birth, female (years)'
Database: world_development_indicators
Question: From 1960 to 1965, which country had the highest Death rate, crude (per 1,000 people)?
Evidence: IndicatorName = 'Death rate, crude (per 1,000 people)'; the highest refers to MAX(Value); from 1960 to 1965 refers to Year between '1960' and '1965'; country refers to CountryName;
SQL: SELECT CountryName FROM Indicators WHERE Year BETWEEN 1960 AND 1965 AND IndicatorName = 'Death rate, crude (per 1,000 people)' ORDER BY Value DESC LIMIT 1
Database: world_development_indicators
Question: Please list the indicator names of Arab World whose values are higher than 50 in 1960.
Evidence: Arab World refers to CountryName; Year = '1960'; values are higher than 50 refers to Value>50;
SQL: SELECT IndicatorName FROM Indicators WHERE CountryName = 'Arab World' AND Year = 1960 AND Value > 50
Database: world_development_indicators
Question: Which country has the highest value of Merchandise imports by the reporting economy (current US$)?
Evidence: country refers to CountryName; the highest value implies MAX(Value); IndicatorName = 'Merchandise imports by the reporting economy (current US$)';
SQL: SELECT CountryName FROM Indicators WHERE IndicatorName = 'Merchandise imports by the reporting economy (current US$)' ORDER BY Value DESC LIMIT 1
Database: world_development_indicators
Question: Please list annual indicator names which have values of more than 100 in 1965.
Evidence: Annual refers to Periodicity; values of more than 100 implies Value>100; Year = '1965';
SQL: SELECT DISTINCT T2.IndicatorName FROM Indicators AS T1 INNER JOIN Series AS T2 ON T1.IndicatorName = T2.IndicatorName WHERE T1.Year = 1965 AND T1.Value > 100 AND T2.Periodicity = 'Annual'
Database: world_development_indicators
Question: From 1968 to 1970, what are indicator names whose license type is open and values are less than 100?
Evidence: From 1968 to 1970 refers to Year between '1968' and '1970'; values are less than 100 imply Value<100;
SQL: SELECT DISTINCT T1.IndicatorName FROM Indicators AS T1 INNER JOIN Series AS T2 ON T1.IndicatorName = T2.IndicatorName WHERE T1.Year >= 1968 AND T1.Year < 1971 AND T2.LicenseType = 'Open' AND T1.Value < 100
Database: world_development_indicators
Question: Which country had the highest value of indicator belongs to Private Sector & Trade: Exports topic? Please list the country name and indicator name.
Evidence: country refers to CountryName;
SQL: SELECT T1.CountryName, T1.IndicatorName FROM Indicators AS T1 INNER JOIN Series AS T2 ON T1.IndicatorName = T2.IndicatorName WHERE T2.Topic = 'Private Sector & Trade: Exports' ORDER BY T1.Value DESC LIMIT 1
Database: world_development_indicators
Question: Which indicator name uses the Weighted average method and has the lowest value?
Evidence: AggregationMethod = 'Weighted average'; the lowest value implies MIN(Value);
SQL: SELECT T1.IndicatorName, MIN(T1.Value) FROM Indicators AS T1 INNER JOIN Series AS T2 ON T1.IndicatorName = T2.IndicatorName WHERE T2.AggregationMethod = 'Weighted average'
Database: world_development_indicators
Question: Please list out all annual indicator names of Sudan in 1961?
Evidence: Sudan is the name of the country; Periodicity = 'Annual'; Year = '1961'
SQL: SELECT T1.IndicatorName FROM Indicators AS T1 INNER JOIN Series AS T2 ON T1.IndicatorName = T2.IndicatorName WHERE T1.CountryName = 'Sudan' AND T1.Year = 1961 AND T2.Periodicity = 'Annual'
Database: world_development_indicators
Question: From 1960 to 1965, which country has the lowest value of indicator belongs to Health: Population: Structure?
Evidence: From 1960 to 1965 refers to Year between '1960' and '1965'; the lowest value implies MIN(Value); country refers to CountryName;
SQL: SELECT CountryName FROM Indicators WHERE Value = ( SELECT MIN(T1.Value) FROM Indicators AS T1 INNER JOIN Series AS T2 ON T1.IndicatorName = T2.IndicatorName WHERE T1.Year >= 1960 AND T1.Year < 1966 AND T2.Topic = 'Health: Population: Structure' )
Database: world_development_indicators
Question: What percentage of upper middle income countries which have the CO2 emissions from liquid fuel consumption (% of total)

less than 80%?
Evidence: IndicatorName = 'CO2 emissions from liquid fuel consumption (% of total)'; less than 80% implies Value<80%; IncomeGroup = 'Upper middle income'; DIVIDE(COUNT(CountryCode where IndicatorName = 'CO2 emissions from liquid fuel consumption (% of total)'; Value<80%; IncomeGroup = 'Upper middle income'), COUNT(CountryCode where IncomeGroup = 'Upper middle income'));
SQL: SELECT SUM(CASE WHEN T2.IndicatorName = 'CO2 emissions FROM liquid fuel consumption (% of total)' AND t2.Value < 80 THEN 1 ELSE 0 END) * 1.0 / COUNT(T1.CountryCode) persent FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.IncomeGroup = 'Upper middle income'
Database: world_development_indicators
Question: What is indicator code of Rural population?
Evidence: IndicatorName = 'Rural population';
SQL: SELECT DISTINCT IndicatorCode FROM Indicators WHERE IndicatorName = 'Rural population'
Database: world_development_indicators
Question: How many country uses the 2008 System of National Accounts methodology? List our their table name.
SQL: SELECT TableName  FROM Country WHERE SystemOfNationalAccounts = 'Country uses the 2008 System of National Accounts methodology.'
Database: world_development_indicators
Question: List out the series code of countries using Euro as their currency unit.
SQL: SELECT DISTINCT T2.SeriesCode FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T1.CurrencyUnit = 'Euro'
Database: world_development_indicators
Question: List out the long name of countries using series code as DT.DOD.DSTC.CD
SQL: SELECT T1.LongName FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T2.SeriesCode = 'DT.DOD.DSTC.CD'
Database: world_development_indicators
Question: Mention the series code of countries using Hong Kong dollar as their currency unit.
SQL: SELECT T2.SeriesCode FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T1.CurrencyUnit = 'Hong Kong dollar'
Database: world_development_indicators
Question: List out the table name of countries using series code as SP.DYN.TO65.MA.ZS
SQL: SELECT T1.TableName FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T2.Seriescode = 'SP.DYN.TO65.MA.ZS'
Database: world_development_indicators
Question: List out the country name of lower earning countries
Evidence: lower earning countries refer to IncomeGroup = 'Low income';
SQL: SELECT DISTINCT T2.CountryName FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.IncomeGroup = 'Low income'
Database: world_development_indicators
Question: List out the series code and country code of the poor countries that located in Latin American & Carribbean.
Evidence: Latin American & Carribbean is the name of the region; poor countries refers to IncomeGroup = 'Low income';
SQL: SELECT T2.SeriesCode, T2.CountryCode FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T1.Region = 'Latin America & Caribbean' AND t1.incomegroup = 'Low income'
Database: world_development_indicators
Question: Mention the series code of countries using Australian dollar as their currency unit. Which country belongs to middle income group among them.
Evidence: middle income group refers to IncomeGroup = 'Low middle income';
SQL: SELECT T1.CountryCode, T2.SeriesCode FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T1.CurrencyUnit = 'Australian dollar' AND T1.IncomeGroup = 'Lower middle income'
Database: world_development_indicators
Question: List out the country name of upper middle income group. Which country has the earliest national account base year? List out the region where this country locates.
Evidence: IncomeGroup = 'Upper middle income'; the earliest national account base year refers to MIN(NationalAccountsBaseYear); 

SQL: SELECT DISTINCT T1.CountryName FROM indicators AS T1 INNER JOIN country AS T2 ON T1.CountryCode = T2.CountryCode WHERE T2.IncomeGroup = 'Upper middle income' UNION SELECT longname FROM ( SELECT longname FROM country WHERE NationalAccountsBaseYear <> '' ORDER BY NationalAccountsBaseYear ASC LIMIT 1 )
Database: world_development_indicators
Question: List out the country code and country name of the rich countries using Euro as their currency unit
Evidence: Non-OECD and OECD countries can be regarded as rich countries for those that are part of the High Income Group;
SQL: SELECT DISTINCT T1.CountryCode, T2.CountryName FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.CurrencyUnit = 'Euro' AND (T1.IncomeGroup = 'High income: OECD' OR T1.IncomeGroup = 'High income: nonOECD')
Database: world_development_indicators
Question: List out the table name and currency unit of countries using series code as FP.CPI.TOTL
SQL: SELECT T1.TableName, T1.CurrencyUnit FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T2.SeriesCode = 'FP.CPI.TOTL'
Database: world_development_indicators
Question: List out the name and indicator code of high income: nonOECD countries
Evidence: high income: non-OECD' refer to IncomeGroup;
SQL: SELECT DISTINCT T1.CountryCode, T2.CountryName FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.IncomeGroup = 'High income: nonOECD'
Database: world_development_indicators
Question: Mention the series code of countries using pound sterling as their currency unit. Which country belongs to high income group among them.
SQL: SELECT DISTINCT T1.CountryCode, T1.CurrencyUnit, T1.IncomeGroup FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T1.CurrencyUnit = 'Pound sterling' AND T1.IncomeGroup LIKE '%high income%'
Database: world_development_indicators
Question: List down 10 country codes and it's short names.
SQL: SELECT CountryCode, ShortName FROM Country LIMIT 10
Database: world_development_indicators
Question: How many of the countries name start with alphabet A? List down the Alpha2Code of them.
Evidence: countries name starts with alphabet A refers to shortname like 'A%';
SQL: SELECT COUNT(ShortName) FROM Country WHERE ShortName LIKE 'A%' UNION SELECT alpha2code FROM country WHERE shortname LIKE 'A%'
Database: world_development_indicators
Question: Which countries use Euro as their currency? List down the table name.
Evidence: CurrencyUnit = 'Euro';
SQL: SELECT TableName FROM Country WHERE CurrencyUnit = 'Euro'
Database: world_development_indicators
Question: How many of the countries do not have special notes? List the long name.
Evidence: do not have special notes implies SpecialNotes are NULL;
SQL: SELECT COUNT(LongName) FROM Country WHERE SpecialNotes = '' UNION SELECT longname FROM country WHERE specialnotes = ''
Database: world_development_indicators
Question: Which high income group countries are from Asia?
Evidence: Asia is the name of the region;
SQL: SELECT CountryCode, Region FROM Country WHERE (IncomeGroup = 'High income: OECD' OR IncomeGroup = 'High income: nonOECD') AND Region LIKE '%Asia%'
Database: world_development_indicators
Question: Name the countries' long name with national accounts base year prior to 1980.
Evidence: national accounts base year prior to 1980 means before 1980 and refers to NationalAccountsBaseYear<1980;
SQL: SELECT LongName FROM Country WHERE NationalAccountsBaseYear < '1980' AND NationalAccountsBaseYear != ''
Database: world_development_indicators
Question: Which low income country has a series code of DT.DOD.DECT.CD? Name the country code of it.
Evidence: IncomeGroup = 'Low income';
SQL: SELECT T1.CountryCode FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T1.IncomeGroup = 'Low income' AND T2.Seriescode = 'DT.DOD.DECT.CD'
Database: world_development_indicators
Question: State the table name of country with description of "Covers mainland Tanzania only".
SQL: SELECT DISTINCT T1.TableName FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T2.Description = 'Covers mainland Tanzania only.'
Database: world_development_indicators
Question: Write down the description and series code of Benin in year 2005.
Evidence: Benin is the short name of the country; year 2005 refers to Year = 'YR2005';
SQL: SELECT T2.Description, T2.Seriescode FROM Country AS T1 INNER JOIN FootNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T1.TableName = 'Benin' AND T2.Year = 'YR2005'
Database: world_development_indicators
Question: What are the footnote description of Finland in year 2000?
Evidence: Finland is the short name of the country; year 2000 refers to Year = 'YR2000';
SQL: SELECT DISTINCT T2.Description FROM Country AS T1 INNER JOIN FootNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T1.TableName = 'Finland' AND T2.Year = 'YR2000'
Database: world_development_indicators
Question: What are the years when countries have indicator name of "Air transport, passengers carried"? List the table name of these countries.
SQL: SELECT DISTINCT T2.Year, T1.TableName FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T2.IndicatorName = 'Air transport, passengers carried'
Database: world_development_indicators
Question: List the long name of countries with indicator name in 1980.
Evidence: with any indicator name implies IndicatorName is not NULL; Year = '1980';
SQL: SELECT DISTINCT T1.LongName FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T2.Year = 1980 AND T2.IndicatorName IS NOT NULL
Database: world_development_indicators
Question: State the currency of Malaysia and what are the indicator code used by this country in 1970?
Evidence: Malaysia is the name of the country; currency refers to CurrencyUnit; Year = '1970';
SQL: SELECT T1.currencyunit, T2.IndicatorCode FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.TableName = 'Malaysia' AND T2.Year = 1970
Database: world_development_indicators
Question: Name 5 country codes of country with highest value and state the region of these countries.
Evidence: with highest value refers to MAX(Value);
SQL: SELECT DISTINCT T1.CountryCode, T1.Region FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode ORDER BY T2.Value DESC LIMIT 5
Database: world_development_indicators
Question: How many countries have country note description as "Sources: UN Energy Statistics (2014)"? List the currency of these countries.
Evidence: countries refer to CountryCode; currency refers to CurrencyUnit;
SQL: SELECT COUNT(DISTINCT T1.Countrycode) FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T2.Description = 'Sources: UN Energy Statistics (2014)' UNION SELECT DISTINCT t1.CurrencyUnit FROM country AS t1 INNER JOIN countrynotes AS t2 ON t1.CountryCode = t2.Countrycode WHERE t2.Description = 'Sources: UN Energy Statistics (2014)'
Database: world_development_indicators
Question: How many footnotes have been made in year 1980 and what are the table names of these countries that made the footnotes?
Evidence: year 1980 refers to Year = 'YR1980';
SQL: SELECT COUNT(T2.Description) FROM Country AS T1 INNER JOIN FootNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T2.Year = 'YR1980' UNION ALL SELECT DISTINCT T1.TableName FROM Country AS T1 INNER JOIN FootNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T2.Year = 'YR1980'
Database: world_development_indicators
Question: List the series code of country with country notes description as "Data sources : Eurostat" and state the Wb2Code of these countries.
SQL: SELECT T2.seriescode, T1.Wb2Code FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T2.Description = 'Data sources : Eurostat'
Database: world_development_indicators
Question: Among the low income countries, which country has the lowest fertility rate?
Evidence: fertility rate refers to IndicatorName = 'Adolescent fertility rate (births per 1,000 women ages 15-19)'; lowest refers to MIN(Value); IncomeGroup = 'Low income';
SQL: SELECT T2.CountryName FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.IncomeGroup = 'Low income' AND T2.IndicatorName = 'Adolescent fertility rate (births per 1,000 women ages 15-19)' ORDER BY T2.Value LIMIT 1
Database: world_development_indicators
Question: How much is the total urban population of middle income countries in 1960?
Evidence: IncomeGroup = 'Middle income'; Year = 1960; urban population refers to IndicatorName;
SQL: SELECT SUM(T2.Value) FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.IncomeGroup LIKE '%middle income' AND T2.Year = 1960 AND T2.IndicatorName = 'Urban population'
Database: world_development_indicators
Question: Name the country with fastest growth in adjusted net national income in 1980 and state the currency used by this country.
Evidence: fastest growth refers to MAX(Value); IndicatorName = 'Adjusted net national income (annual % growth)'; Year = '1980'; currency refers to CurrencyUnit;
SQL: SELECT T2.countryname, T1.CurrencyUnit FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T2.IndicatorName = 'Adjusted net national income (annual % growth)' AND T2.Year = 1980 AND T1.CurrencyUnit != '' ORDER BY T2.Value DESC LIMIT 1
Database: world_development_indicators
Question: How many countries using the 1993 System of National Accounts methodology?
Evidence: use the 1993 System of National Accounts methodology refers to SystemOfNationalAccounts = '1993 System of National Accounts methodology.'
SQL: SELECT COUNT(CountryCode) FROM Country WHERE SystemOfNationalAccounts = 'Country uses the 1993 System of National Accounts methodology.'
Database: world_development_indicators
Question: Which country have completed vital registration? List all the countries.
Evidence: have completed vital registration refers to VitalRegistrationComplete = Yes; country name refers to ShortName
SQL: SELECT ShortName FROM Country WHERE VitalRegistrationComplete = 'Yes'
Database: world_development_indicators
Question: Which country have conducted population census from 2010 until 2012 and have completed vital registration?
Evidence: from 2010 until 2012 refers to LatestPopulationCensus between '2010' and '2012'; have completed vital registration refers to VitalRegistrationComplete = 'Yes'; CountryName = ShortName + LongName
SQL: SELECT ShortName, LongName FROM Country WHERE LatestPopulationCensus >= 2010 AND LatestPopulationCensus < 2013 AND VitalRegistrationComplete = 'Yes'
Database: world_development_indicators
Question: Which country have the highest CO2 emissions in 1960?
Evidence: which country refers to countryname; the highest CO2 emissions refers to max(value where indicatorname = 'CO2 emissions (metric tons per capita)'); in 1960 refers to year = '1970'
SQL: SELECT CountryName FROM Indicators WHERE Year = 1960 AND IndicatorName = 'CO2 emissions (metric tons per capita)' ORDER BY Value DESC LIMIT 1
Database: world_development_indicators
Question: What is the ratio between country with the highest number of infant deaths in 1971 and the lowest number of infant deaths in 1971? List the country with the highest number of infant deaths in 1971 and the lowest number of infant deaths in 1971.
Evidence: ratio = divide(max(value where indicatorname = 'Number of infant deaths' and year = '1971'), min(value where indicatorname = 'Number of infant deaths' and year = '1971')); the highest number of infant deaths in 1971 refers to max(value where indicatorname = 'Number of infant deaths' and year = '1971'); the lowest number of infant deaths in 1971 refers to min(value where indicatorname = 'Number of infant deaths' and year = '1971')
SQL: SELECT CAST(MAX(value) AS REAL) / MIN(value) FROM indicators WHERE indicatorname = 'Number of infant deaths' AND year = '1971' UNION ALL SELECT countryname FROM ( SELECT countryname, MAX(value) FROM indicators WHERE indicatorname = 'Number of infant deaths' AND year = '1971' ) UNION SELECT countryname FROM ( SELECT countryname, MIN(value) FROM indicators WHERE indicatorname = 'Number of infant deaths' AND year = '1971' )
Database: world_development_indicators
Question: What country have the series code of SP.DYN.CBRT.IN?
Evidence: what country refers to ShortName
SQL: SELECT T1.ShortName FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T2.SeriesCode = 'SP.DYN.CBRT.IN'
Database: world_development_indicators
Question: Which country have data classified as official aid?
Evidence: which country refers to ShortName; have data classified as official aid refers to description = 'Data are classified as official aid.'
SQL: SELECT DISTINCT T1.CountryCode FROM Country AS T1 INNER JOIN FootNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T2.Description = 'Data are classified as official aid.'
Database: world_development_indicators
Question: What country have its data estimated based on regression?
Evidence: what country refers to LongName; have its data estimated based on regression refers to description = 'Estimates are based on regression.'
SQL: SELECT DISTINCT T1.ShortName FROM Country AS T1 INNER JOIN CountryNotes AS T2 ON T1.CountryCode = T2.Countrycode WHERE T2.Description = 'Estimates are based on regression.'
Database: world_development_indicators
Question: List all the country in East Asia & Pacific region that have more than 2000000 urban population in 1970.
Evidence: country refers to LongName; have more than 2000000 urban population refers to value where indicatorname = 'Urban population'>2000000; in 1970 refers to year = '1970'
SQL: SELECT DISTINCT T1.CountryCode FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T2.Year = 1970 AND T1.Region = 'East Asia & Pacific' AND T2.Value > 2000000 AND t2.indicatorname = 'Urban population'
Database: world_development_indicators
Question: In 1960, what is largest population for country with upper middle income?
Evidence: in 1960 refers to year = '1960'; the largest population refers to max(value where IndicatorName = 'Population, total'); country with upper middle income refers to incomegroup = 'Upper middle income'
SQL: SELECT MAX(T2.Value) FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.IncomeGroup = 'Upper middle income' AND T2.Year = 1960 AND T2.IndicatorName = 'Population, total'
Database: world_development_indicators
Question: How many countries uses the 1968 System of National Accounts methodology?
Evidence: uses the 1968 System of National Accounts methodology refers to SystemOfNationalAccounts = '1968 System of National Accounts methodology'
SQL: SELECT COUNT(CountryCode)  FROM Country WHERE SystemOfNationalAccounts = 'Country uses the 1968 System of National Accounts methodology.'