CREATE TABLE table_68717 ("Name" CLOB, "Years" CLOB, "League" CLOB, "FA Cup" CLOB, "League Cup" CLOB, "Europe" CLOB, "Other [C ]" CLOB, "Total" CLOB)

The league of 400 (21) has what years listed?
SELECT "Years" FROM table_68717 WHERE "League" = '400 (21)'
SELECT "Years" FROM "table_68717" WHERE "League" = '400 (21)'