CREATE TABLE table_204_638 (id DECIMAL, "year" DECIMAL, "tournament" TEXT, "surface" TEXT, "round" TEXT, "winner" TEXT, "score" TEXT)

what was the last year where connors won ?
SELECT MAX("year") FROM table_204_638 WHERE "winner" = 'jimmy connors'
SELECT MAX("year") FROM "table_204_638" WHERE "winner" = 'jimmy connors'