What's the date released when there was 9.7% of Green communist?
CREATE TABLE "116_seats_needed_for_a_majority" (
  "date_released" text,
  "polling_institute" text,
  "social_democratic" text,
  "socialist" text,
  "green_communist" text,
  "democratic_and_social_centre" text,
  "lead" text
);
SELECT "date_released" FROM "116_seats_needed_for_a_majority" WHERE "green_communist"='9.7%';