Season 1 (A)
13 episodes
January 1, 1970 - December 23, 2003
Season 2 (B)
12 episodes
October 8, 2004 - December 17, 2004
Season 3 (C)
12 episodes
September 30, 2005 - December 9, 2005
Season 4 (D)
13 episodes
September 29, 2006 - December 15, 2006
Season 5 (E)
13 episodes
September 21, 2007 - December 14, 2007
Season 6 (F)
12 episodes
November 14, 2008 - March 20, 2009
Season 7 (G)
19 episodes
November 26, 2009 - April 16, 2010
Season 8 (H)
18 episodes
September 17, 2010 - May 2, 2011
Season 9 (I)
20 episodes
September 9, 2011 - May 4, 2012
Season 10 (J)
18 episodes
September 14, 2012 - August 25, 2013
Season 11 (K)
18 episodes
September 6, 2013 - January 31, 2014
Season 12 (L)
18 episodes
October 3, 2014 - January 31, 2015
Season 13 (M)
18 episodes
October 16, 2015 - March 25, 2016
Season 14 (N)
18 episodes
October 21, 2016 - February 24, 2017
Season 15 (O)
18 episodes
October 20, 2017 - March 2, 2018
Season 16 (P)
18 episodes
September 10, 2018 - March 8, 2019
Season 17 (Q)
18 episodes
September 6, 2019 - February 28, 2020
Season 18 (R)
18 episodes
May 28, 2020 - March 27, 2021
Season 19 (S)
16 episodes
September 9, 2021 - August 30, 2022
Season 20 (T)
14 episodes
November 11, 2022 - December 15, 2023
Season 21 (U)
17 episodes
December 21, 2023 - May 14, 2024
Season 23 (V)
7 episodes
October 22, 2024 - December 3, 2024