Season 1 ABC Season 1980 ABC , 1980 Season 1999 ABC , 1999 Season 2001 ABC , 2001 Season 2004 ABC , 2004 Season 2012 ABC , 2012 Season 2015 ABC , 2015 Season 2016 ABC , 2016 Season 2017 ABC , 2017 Season 2018 ABC , 2018