| | | | | | | 1971 2 | | 1990 12 1992 3 | | | | 1990.12 1993.12 51325 51149 | | 1993.12 1994.12 | 1994.12 1997.01 | | | | 1997.01 1997.10 | | | | 1997.10 1999.09 | | 1999.09 2003.08 | 1997.08 2000. | 06 | 2000.08 2002.12 | | | 2003.08 2003.09 | | 2003.09 2006.04 | | | 2006.04 2008.07 | | | 2008.07 2011.08 | | 2011.08 2014.01 | | 2014.01 2015.11 | | 2014.11 2015.11 | | | | 2015.11 2016.08 | | 2016.08 2018.01 | | | 2018.01 2020.04 | | | 2020.04 2020.05 | | | 2020.05 | | |