| | 1968 7 | | | 1992 8 | | 1987.09 1992.07 | | 1992.09 1996.09 | | 1996.09 1999.11 | | 1999.11 2001.11 | | 2001.11 2003.12 | | 2004.01 2012.11 | | 2012.11 2017.12 | | 2017.12 | | |