Question: If unknown is larger than 1.0, what is the maximum two year amount?
SQL: SELECT MAX("Two years") FROM "1-174266-6" WHERE "Unknown" > 1.0;

Question: If two years is 159, what is the amount for one year?
SQL: SELECT MIN("One year") FROM "1-174266-6" WHERE "Two years" = 159.0;

Question: If the year is 2010, what is the minimum amount of years 5-9?
SQL: SELECT MIN("5–9 years") FROM "1-174266-6" WHERE "Year" = 2010.0;

Question: If year 20-24 is 24, what is the amount for three years?
SQL: SELECT "Three years" FROM "1-174266-6" WHERE "20–24 years" = 24.0;