| | 1968 8 1996 06 | 1991 09 | | | 1987.07 1991.07 | | | 1991.07 1991.09 | 1991.09 1999.11 | | | 1999.11 2002.01 | | 1997.08 1999.12 | | | 2002.01 2004.02 | | 2004.02 2008.04 | | 2008.04 2008.11 | | | | 2008.11 2013.03 | | 2013.03 2015. 12 | | 2015. 12 2016. 04 | | | 2016.04 2016.06 | | 2016.06 2019.12 | | 2019.12 2021.06 | | | 2021.06 | | | | | | | | |