Season 1 CBS Season 1995 CBS Season 1996 CBS Season 1997 CBS Season 1998 CBS Season 1999 CBS , 1999 Season 2000 CBS , 2000 Season 2001 CBS , 2001 Season 2002 CBS , 2002 Season 2003 CBS , 2003 Season 2004 CBS , 2004 Season 2005 CBS , 2005 Season 2006 CBS , 2006 Season 2007 CBS , 2007 Season 2008 CBS , 2008 Season 2009 CBS , 2009 Season 2010 CBS , 2010 Season 2011 CBS , 2011 Season 2012 CBS , 2012 Season 2013 CBS , 2013 Season 2014 CBS , 2014 Season 2015 CBS , 2015 Season 2016 CBS , 2016 Season 2017 CBS , 2017 Season 2018 CBS , 2018