2004, 2008, 2012, 2016, 2020 1984 1992, 1996, 2000 2016, 2020 2004, 2008 1996, 2000 2004, 2012, 2016 2016, 2020 2016, 2020 2000, 2004, 2008 2004, 2008, 2012, 2016 2000, 2004, 2008 2000 2020 1988, 1992 2004, 2008, 2012 2012, 2016, 2020 1988, 1992, 1996 2004, 2008, 2012 2008, 2012, 2016 1996, 2000, 2004 