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

what is the only year that is n/a ?
SELECT "year" FROM table_204_426 WHERE "playoffs" IS NULL
SELECT "year" FROM "table_204_426" WHERE "playoffs" IS NULL