Question: What is the value in 1965 when 7 is the value for 1967?
SQL: SELECT "1965" FROM "2-1568184-1" WHERE "1967" = '7';

Question: What is the value in 1971 when 30 is the value for 1969?
SQL: SELECT "1971" FROM "2-1568184-1" WHERE "1969" = '30';

Question: What was the value in 1966 with a 0 value in 1969?
SQL: SELECT "1966" FROM "2-1568184-1" WHERE "1969" = '0';