CREATE TABLE table_22339 ("City of license /Market" TEXT, "Station" TEXT, "Channel  (  TV / RF  ) " TEXT, "Owned Since" FLOAT, "Affiliation" TEXT)

How many stations have been owned since wfts-tv?
SELECT "Owned Since" FROM table_22339 WHERE "Station" = 'WFTS-TV'
SELECT "Owned Since" FROM "table_22339" WHERE "Station" = 'WFTS-TV'