When mixed doubles is didit juang indrianto yayu rahayu what is the most current year?
CREATE TABLE "juniors" (
  "year" real,
  "boys_singles" text,
  "girls_singles" text,
  "boys_doubles" text,
  "girls_doubles" text,
  "mixed_doubles" text
);
SELECT MAX("year") FROM "juniors" WHERE "mixed_doubles"='Didit Juang Indrianto Yayu Rahayu';