All Available Season All Season Specials May, 2006 25 episodes 0.0 Season 1 Jan, 1999 7 episodes 7.1 Season 2 Sep, 1999 21 episodes 7.2 Season 3 Jul, 2001 22 episodes 6.8 Season 4 May, 2005 30 episodes 6.8 Season 5 Sep, 2006 18 episodes 6.8 Season 6 Sep, 2007 12 episodes 7.0 Season 7 Sep, 2008 16 episodes 6.7 Season 8 Sep, 2009 20 episodes 6.5 Season 9 Sep, 2010 18 episodes 6.6 Season 10 Sep, 2011 23 episodes 6.8 Season 11 Sep, 2012 22 episodes 6.6 Season 12 Sep, 2013 21 episodes 6.4 Season 13 Sep, 2014 18 episodes 6.5 Season 14 Sep, 2015 20 episodes 6.8 Season 15 Sep, 2016 20 episodes 6.5 Season 16 Oct, 2017 20 episodes 6.4 Season 17 Sep, 2018 20 episodes 6.1 Season 18 Sep, 2019 20 episodes 5.6 Season 19 Sep, 2020 20 episodes 5.6 Season 20 Sep, 2021 20 episodes 5.4 Season 21 Sep, 2022 20 episodes 6.7 Season 22 Oct, 2023 15 episodes 7.2
