Season 1

13 episodes

2001

Season 2

26 episodes

2004

Season 3

14 episodes

Season 4

13 episodes

Season 5

13 episodes

2007

Season 6

13 episodes

2008

Season 7

10 episodes

2009

Season 8

11 episodes

2010

Season 9

11 episodes

2012

Season 10

12 episodes

2013

Season 11

9 episodes

2014

Season 12

11 episodes

2014

Season 13

12 episodes

2015

Season 14

12 episodes

2016

Season 15

12 episodes

2017

Season 16

12 episodes

2018