CREATE TABLE table_11731 ("Year" FLOAT, "Film name" TEXT, "Co-singer" TEXT, "Music director" TEXT, "Lyricist" TEXT)

What was the latest year for the film Gaon Ki Ganga?
SELECT MAX("Year") FROM table_11731 WHERE "Film name" = 'gaon ki ganga'
SELECT MAX("Year") FROM "table_11731" WHERE "Film name" = 'gaon ki ganga'