CREATE TABLE "population_growth_history" (
  "city" text,
  "1970" real,
  "1980" real,
  "1990" real,
  "2000" real,
  "2010_est" real
);

Question: Of 2010 est. with less than 171,750 and 2000 less than 131,714, what is the 1970 population average?
SQL: SELECT AVG("1970") FROM "population_growth_history" WHERE "2010_est"='171,750' AND "2000"<'131,714';

Question: With 1990 growth greater than 19,988 and 1970 growth less than 10,522, what is the 1980 average?
SQL: SELECT AVG("1980") FROM "population_growth_history" WHERE "1990">'19,988' AND "1970"<'10,522';

Question: Of 2000 growth less than 32,093 and 1980 growth over 64,975, what is the 1970 total number?
SQL: SELECT COUNT("1970") FROM "population_growth_history" WHERE "2000"<'32,093' AND "1980">'64,975';

Question: How many 1990 growth numbers had less than 10,522 in 1970?
SQL: SELECT COUNT("1990") FROM "population_growth_history" WHERE "1970"<'10,522';

Question: Which is the lowest 1980 growth that had 2,610 in 1970?
SQL: SELECT MIN("1980") FROM "population_growth_history" WHERE "1970"='2,610';