How much are all winners share ($) in the year 2004?
CREATE TABLE "winners" (
  "year" text,
  "dates" text,
  "champion" text,
  "country" text,
  "score" text,
  "tournament_location" text,
  "purse" real,
  "winners_share" real
);
SELECT "winners_share" FROM "winners" WHERE "year"='2004';