All Available Season All Season Specials Sep, 2009 22 episodes 0.0 Season 1 Sep, 2001 33 episodes 9.0 Season 2 Sep, 2002 14 episodes 9.1 Season 3 Apr, 2003 13 episodes 0.0 Season 4 Sep, 2003 14 episodes 10.0 Season 5 Apr, 2004 13 episodes 0.0 Season 6 Nov, 2004 14 episodes 8.9 Season 7 Sep, 2005 17 episodes 8.5 Season 8 Sep, 2006 21 episodes 8.5 Season 9 Sep, 2007 22 episodes 8.5 Season 10 Aug, 2008 19 episodes 8.2 Season 11 Sep, 2009 15 episodes 8.6 Season 12 Nov, 2010 18 episodes 8.3 Season 13 Sep, 2011 18 episodes 8.8 Season 14 Jan, 2013 20 episodes 8.9 Season 15 Jan, 2014 19 episodes 6.8 Season 16 Jan, 2015 19 episodes 8.4 Season 17 Jan, 2016 19 episodes 8.9 Season 18 Jan, 2017 19 episodes 9.1 Season 19 Jan, 2018 20 episodes 9.5 Season 20 Mar, 2019 22 episodes 0.0 Season 21 Jan, 2021 20 episodes 7.9 Season 22 Jan, 2022 20 episodes 7.8 Season 23 Oct, 2023 7 episodes 8.7
