| | | 1970 10 | 1988 | 8 1996 4 | | 1985.09 1988.07 | | 1988.08 1990.08 | 1990.08 1991.05 | | 1991.05 1995.07 | | 1995.07 1998.04 | | 1998.04 1999.10 | 1999.10 2001.05 | | 2001.05 2002.04 | | 2002.04 2004.01 | | 2004.01 2007.10 | 2007.10 2012.11 | | 2012.11 2016.06 | | 2016.06 2021.06 | | 2021.06 | |