1968 5 1991 7 | | | | | 1991. 08 1994. 08 | | 1994.08 1996.03 | ; | 1996. 03 1997. 10 | ; | 1997.10 1998.05 | ; | 1998.05 2004.11 | ; 2001.07 2004.06 | | ; | 2004.11 2007.12 | | ; | 2007.12 2009.12 | ; | 2009.12 2010.12 | | ; | 2010.12 2011.08 | | ; | 2011.08 2012. 12 | | | ; | 2012. 12 2015. 06 | ; | 2015. 06 2015. 08 | ; | 2015.08 2018.03 | ; | 2018.03 2019.02 | ; | 2019.02 2019.06 | | ; | 2019.06 2021.06 | | | ; | 2021.06 | | |