When are all years that the champion is Ji Min Jeong?
CREATE TABLE "winners" (
  "year" text,
  "dates" text,
  "champion" text,
  "country" text,
  "score" text,
  "tournament_location" text,
  "purse" real,
  "winners_share" real
);
SELECT "year" FROM "winners" WHERE "champion"='Ji Min Jeong';