CREATE TABLE table_203_726 (id NUMBER, "year" NUMBER, "national champion" CLOB, "score" CLOB, "runner-up" CLOB, "host or site" CLOB)

how many years has stanford been national champion ?
SELECT COUNT("year") FROM table_203_726 WHERE "national champion" = 'stanford'
SELECT COUNT("year") FROM "table_203_726" WHERE "national champion" = 'stanford'