What was the total number of weeks where the game played Ivor Wynne Stadium?
CREATE TABLE "regular_season" (
  "week" real,
  "date" text,
  "opponent" text,
  "location" text,
  "final_score" text,
  "attendance" real,
  "record" text
);
SELECT COUNT("week") FROM "regular_season" WHERE "location"='Ivor Wynne Stadium';