CREATE TABLE table_204_426 (id DECIMAL, "year" TEXT, "division" DECIMAL, "league" TEXT, "regular season" TEXT, "playoffs" TEXT, "open cup" TEXT)

how many years did they not qualify for the playoffs ?
SELECT COUNT("year") FROM table_204_426 WHERE "playoffs" = 'did not qualify'
SELECT COUNT("year") FROM "table_204_426" WHERE "playoffs" = 'did not qualify'