CREATE TABLE table_66951 ("Year" FLOAT, "Division" CLOB, "League" CLOB, "Regular Season" CLOB, "Playoffs" CLOB, "Open Cup" CLOB)

What year did the Nashville Metros have the Regular Season 2nd, central?
SELECT "Year" FROM table_66951 WHERE "Regular Season" = '2nd, central'
SELECT "Year" FROM "table_66951" WHERE "Regular Season" = '2nd, central'