When  9 games (28,002 avg.) is the results of the games what is the date/year?
CREATE TABLE "canadian_football_league_attendance" (
  "type_of_record" text,
  "attendance" real,
  "date_year" text,
  "stadium" text,
  "result_games" text
);
SELECT "date_year" FROM "canadian_football_league_attendance" WHERE "result_games"='9 games (28,002 avg.)';