CREATE TABLE table_36871 ("Club" TEXT, "Sport" TEXT, "League" TEXT, "Venue" TEXT, "Established" FLOAT, "Championships" FLOAT)

What year was the West Coast League established than the championships are greater than 0?
SELECT "Established" FROM table_36871 WHERE "Championships" > '0' AND "League" = 'west coast league'
SELECT "Established" FROM "table_36871" WHERE "Championships" > '0' AND "League" = 'west coast league'