CREATE TABLE table_204_32 (id DECIMAL, "season" DECIMAL, "division" TEXT, "w-l" TEXT, "finish" TEXT, "home" TEXT, "road" TEXT, "gf" DECIMAL, "ga" DECIMAL, "coach" TEXT, "playoffs" TEXT, "avg attendance" DECIMAL)

what year did the edmonton rush have their top season ?
SELECT "season" FROM table_204_32 ORDER BY "w-l" DESC LIMIT 1
SELECT "season" FROM "table_204_32" ORDER BY "w-l" DESC NULLS LAST LIMIT 1