CREATE TABLE table_76811 ("1976" TEXT, "1977" TEXT, "1978" TEXT, "1979" TEXT, "1980" TEXT)

what is 1976 when 1980 is 2.0?
SELECT "1976" FROM table_76811 WHERE "1980" = '2.0'
SELECT "1976" FROM "table_76811" WHERE "1980" = '2.0'