Is Kankuro or Gaara older

Temari is the oldest, then Kankuro, and Gaara is the youngest. It shows it in season two, episode thirty-four that Gaara's the youngest. It's after the match between Gaara & that big guy from the Village of Rain. They're going through a Chuunin exam and Kankuro wants to stop fighting to go to the tower, but Gaara says he hadn't had enough. So Kankuro grabs him and says, "Why don't you listen to your older brother once in a while?" Then later, Temari says "This is your big sister asking U."