Name the most number for air date 2009/12/29
CREATE TABLE "season_2" (
  "num" real,
  "episode" text,
  "air_date_canada_yyyy_mm_dd" text,
  "viewers_canada" real,
  "air_date_netherlands_yyyy_mm_dd" text,
  "viewers_netherlands" real
);
SELECT MAX("num") FROM "season_2" WHERE "air_date_netherlands_yyyy_mm_dd"='2009/12/29';