| | 1968 2 1986 11 1989 12 | | | | | | | | | | | | | 1986.11 ︱ 1990.12 86641 | 1990.12 ︱ 1991.04 | 1991.04 ︱ 1997.07 | 1997.07 ︱ 2003.09 | | 1998.08 ︱ 2001.06 | 2001.08 ︱ | 2003.12 | | 2003.09 ︱ 2008.02 | 2008.02 ︱ 2011.03 | 2011.03 ︱ 2013.01 | | 2013.01 ︱ 2014.02 | | | 2014.02 ︱ 2015.02 | 2015.02 ︱ 2017.12 | | 2017.12 ︱ 2021.10 | 2021.10 ︱ 2022.01 | | 2022.01 ︱ | | | |