Season 1
22 episodes · Jan 4, 2007
Season 2
25 episodes · Oct 11, 2007
Season 3
25 episodes · Oct 30, 2008
Season 4
25 episodes · Sep 24, 2009
Season 5
25 episodes · Nov 4, 2010
Season 6
28 episodes · Sep 29, 2011
Season 7
27 episodes · Sep 20, 2012
Season 8
13 episodes · Sep 26, 2013
Season 9
27 episodes · Sep 18, 2014
Season 10
29 episodes · Sep 10, 2015
Season 11
29 episodes · Sep 15, 2016
Season 12
27 episodes · Oct 5, 2017
Season 13
26 episodes · Oct 18, 2018
Season 14
25 episodes · Sep 26, 2019
Season 15
25 episodes · Sep 24, 2020
Season 16
28 episodes · Sep 9, 2021
Season 17
26 episodes · Sep 15, 2022
Season 18
26 episodes · Sep 28, 2023
Season 19
25 episodes · Sep 26, 2024
Season 20
21 episodes · Oct 9, 2025
