| | 1968 4 | 1991 8 | 2001 8 | | | | 1987.09 1991.08 | | | 1991.08 1992.09 | | 1992.09 1993.11 | | 1993.11 1995.03 | | 1995.03 1997.01 | | 1997.01 1998.01 | | 1998.01 1998.09 | | | 1998.09 1999.04 | | | 1999.04 2000.08 | | | 2000.08 2002.06 | | | 2002.06 2005.12 | | | 2001.08 2003.12 | | 2005.12 2012.08 | | | 2006.04 2006.07 | 49 | 2006.09 2009.06 | | | | 2012.08 2014.09 | | | 2014.09 2018.04 | | 2018.04 | | |