| | 1978 2 | | 2001 7 1998 12 | | | | 1997 9 2001 7 | | | 2001 7 2002 3 | | 2002 3 2004 11 | | | 2004 11 2006 2 | | | 2006 2 2011 8 | | 2009 12 2009 10 | | | 2009 10 2010 10 | | | 2011 8 2013 1 | | | 2013 12 2016 10 | | | | 2016 10 2018 6 | | | 2018 6 2018 10 | | | | | 2018 10 2019 1 | | | 2019 1 2019 12 | | | 2019 12 2020 12 | | | | 2020 12 2021 5 | | | | 2021 5 —2021 6 | | 2021 5 | | | |