Season 1
13 episodes · Sep 3, 2007 · 8.0
Season 2
10 episodes · Sep 1, 2008 · 8.0
Season 3
10 episodes · Sep 7, 2009 · 8.1
Season 4
10 episodes · Jan 29, 2010 · 3.3
Season 5
10 episodes · Jan 7, 2011
Season 6
10 episodes · Feb 3, 2012
Season 7
10 episodes · Feb 22, 2013
Season 8
10 episodes · Mar 14, 2014
Season 9
11 episodes · Sep 5, 2014
Season 10
11 episodes · Sep 4, 2015 · 7.0
Season 11
10 episodes · Dec 16, 2016 · 7.9
Season 12
10 episodes · Mar 2, 2018 · 9.2
Season 13
13 episodes · Dec 7, 2018 · 9.0
Season 14
13 episodes · Jan 3, 2020
Season 15
11 episodes · Jan 8, 2021
Season 16
13 episodes · Jan 7, 2022 · 8.0
Season 17
13 episodes · Feb 17, 2023 · 8.0
Season 18
13 episodes · Feb 2, 2024 · 8.0
Season 19
11 episodes · Feb 7, 2025 · 7.6
Season 20
11 episodes · Feb 27, 2026 · 6.4
Season 21
0 episodes · Invalid Date
