Name the year for angga pratama ryan agung saputra
CREATE TABLE "previous_winners" (
  "year" text,
  "men_s_singles" text,
  "women_s_singles" text,
  "men_s_doubles" text,
  "women_s_doubles" text,
  "mixed_doubles" text
);
SELECT "year" FROM "previous_winners" WHERE "men_s_doubles"='angga pratama ryan agung saputra';