Season 1
33 episodes · Sep 13, 2001 · 9.0
Season 2
14 episodes · Sep 26, 2002 · 9.1
Season 3
13 episodes · Apr 3, 2003
Season 4
14 episodes · Sep 25, 2003 · 10.0
Season 5
13 episodes · Apr 15, 2004
Season 6
14 episodes · Nov 18, 2004 · 8.9
Season 7
17 episodes · Sep 15, 2005 · 8.5
Season 8
21 episodes · Sep 14, 2006 · 8.5
Season 9
22 episodes · Sep 13, 2007 · 8.5
Season 10
19 episodes · Aug 28, 2008 · 8.2
Season 11
16 episodes · Sep 10, 2009 · 8.6
Season 12
18 episodes · Nov 11, 2010 · 8.3
Season 13
18 episodes · Sep 15, 2011 · 8.8
Season 14
20 episodes · Jan 3, 2013 · 8.9
Season 15
19 episodes · Jan 16, 2014 · 6.8
Season 16
19 episodes · Jan 8, 2015 · 8.4
Season 17
19 episodes · Jan 7, 2016 · 8.9
Season 18
19 episodes · Jan 12, 2017 · 9.1
Season 19
20 episodes · Jan 25, 2018 · 9.5
Season 20
22 episodes · Mar 21, 2019
Season 21
20 episodes · Jan 14, 2021 · 7.9
Season 22
20 episodes · Jan 20, 2022 · 7.8
Season 23
7 episodes · Oct 18, 2023 · 8.7
