| | | | 1969 12 | 1991 9 | | | | 1991.09 1993.07 | | 1993.07 2001.03 | | 2001.03 2001.09 | | 2001.09 2002.04 | | 2002.04 2007.11 | | 2007.11 2012.11 | | 2012.11 2017.10 | | 2017.10 | |