| | | | | | | | | | | | | | | | | | 1979 12 | 1999 | 6 1997 9 | | | | 1994.09 1997.07 | | | 1997.07 1997.09 | 1997.09 1998.02 | | 1998.02 1999.02 | | 1999.02 2004.12 | | 1998.08 2002.06 | | 2002.09 2004.12 | | | 2004.12 2013.05 | | 2013.05 2015.02 | | 2015. 02 2015. 11 | | | 2015.11 2019.02 | | 2019.02 2020.03 | | | 2020.03 2020.06 | | | | 2020.06 2021.06 | | | 2021.06 | | |