Season 1 ABC , 1968 - 1990 Season 2 ABC , 1991 Season 3 ABC , 1992 Season 4 ABC , 1992 - 2007 Season 5 ABC , 1994 - 2008 Season 6 ABC , 1995 Season 7 ABC , 1995 - 1996 Season 8 ABC , 1997 Season 9 ABC , 1998 Season 10 ABC , 1999 Season 11 ABC , 2000 Season 12 ABC , 2001 Season 13 ABC , 1990 - 2002 Season 34 ABC , 1999 - 2001 Season 35 ABC , 2002 - 2003 Season 36 ABC , 2003 - 2004 Season 37 ABC , 2004 - 2007 Season 39 ABC , 2005 Season 40 ABC , 2009 Season 2009 ABC , 2009 Season 2010 ABC , 2009 - 2010 Season 2011 ABC , 2011 Season 2012 ABC , 2012
, 1968 - 1990
, 1992 - 2007
, 1994 - 2008
, 1995 - 1996
, 1990 - 2002
, 1999 - 2001
, 2002 - 2003
, 2003 - 2004
, 2004 - 2007
, 2009 - 2010
