All Available Season All Season Specials Jan, 0001 47 episodes 0.0 Season 1 Sep, 2005 22 episodes 7.8 Season 2 Aug, 2006 21 episodes 7.9 Season 3 Sep, 2007 15 episodes 7.9 Season 4 Sep, 2008 26 episodes 7.8 Season 5 Sep, 2009 22 episodes 7.7 Season 6 Sep, 2010 23 episodes 7.9 Season 7 Nov, 2011 13 episodes 7.3 Season 8 Sep, 2012 24 episodes 7.4 Season 9 Sep, 2013 24 episodes 7.6 Season 10 Sep, 2014 22 episodes 7.6 Season 11 Oct, 2015 22 episodes 7.7 Season 12 - The Final Chapter Jan, 2017 12 episodes 7.8
