CREATE TABLE table_204_555 (id DECIMAL, "year" DECIMAL, "competition" TEXT, "venue" TEXT, "position" TEXT, "event" TEXT, "notes" TEXT)

which race was faster , 1990 or 1993 ?
SELECT "year" FROM table_204_555 WHERE "year" IN (1990, 1993) ORDER BY "notes" LIMIT 1
SELECT "year" FROM "table_204_555" WHERE "year" IN (1990, 1993) ORDER BY "notes" NULLS FIRST LIMIT 1