Question: What is the average birth rate that has a total fertility rate of na, and a natural growth smaller than 2.5?
SQL: SELECT AVG("Births (000s)") FROM "2-12885399-2" WHERE "Total Fertility Rate" = 'na' AND "Natural Growth" < 2.5;

Question: What was the amount of deaths that had a natural growth smaller than 3.4, and a total fertility rate of 1.63?
SQL: SELECT "Deaths" FROM "2-12885399-2" WHERE "Natural Growth" < 3.4 AND "Total Fertility Rate" = '1.63';

Question: What is the average births that had a death rate of 0.4
SQL: SELECT AVG("Births (000s)") FROM "2-12885399-2" WHERE "Deaths" = 0.4;

Question: What was the amount of Births (000s) that had a death rate larger than 7.6, and a Year of 1990-2009?
SQL: SELECT SUM("Births (000s)") FROM "2-12885399-2" WHERE "Deaths" > 7.6 AND "Year" = '1990-2009';

Question: What was the total fertility rate that had a death rate larger than 7.8?
SQL: SELECT "Total Fertility Rate" FROM "2-12885399-2" WHERE "Deaths" > 7.8;