Season 1 History , 1998 - 2001 Watch now Season 3 History , 2000 Watch now Season 4 History , 2001 - 2011 Watch now Season 5 History , 2000 - 2005 Season 6 History , 2000 Watch now Season 9 History , 2000 - 2005 Season 10 History , 2006 Season 13 History , 1999 - 2007 Season 15 History , 2010 Season 16 History , 2011