| 1971 9 | | 1998 8 | 1993 7 | | 1989 . 09 1993 . 07 | | 1993 . 07 1994 . 12 | | 1994 . 12 1996 . 08 | | 1996 . 08 1999 . 04 | | | 1999 . 04 2000 . 12 | | | 2000 . 12 2004 . 04 | | | 2004 . 04 2006 . 08 | | 2003 . 03 2006 . 01 | | | 2006 . 08 2009 . 03 | | | | 2009 . 03 2010 . 05 | | | 2010 . 05 2013 . 09 | | | 2013 . 09 2015 . 11 | | | 2015 . 11 2016 . 08 | | | 2016 . 08 2017 . 10 | | | 2017 . 10 2019 . 11 | | 2019 . 11 2021 . 06 | | | 2021 . 06 | | |