How many times is the theme roadside attractions: wawa goose?
CREATE TABLE "2010" (
  "date_of_issue" text,
  "theme" text,
  "denomination" text,
  "design" text,
  "illustration" text,
  "quantity" text,
  "printing_process" text,
  "paper_type" text,
  "first_day_cover_cancellation" text
);
SELECT COUNT("quantity") FROM "2010" WHERE "theme"='Roadside Attractions: Wawa Goose';