| 1988.09 1991.07 | | | 1991.07 1992.05 | 1992.05 1993.06 | | | 1993. 06 2003. 05 | | 2003.05 2006.05 | | 2006.05 2009.03 | | 2009.03 2015.03 | | 2015.03 2017.06 | | 2017.06 2019.01 | | 2019.01 2019.11 | | | 2019.11 2019.12 | | | 2019.12 2020.06 | | | 2020.06 | | |