| 1970 11 1990 7 | 1993 10 | | | | | | | | | | | | | | | | | | | | | 1988.09 1990.07 | | 1990.07 1991.05 | | 1991.05 1992.08 | | 1992. 08 1996. 11 | | 1996.11 2001.02 | 1998.08 2000.12 | | | 2001.02 2002.04 | | 2002.04 2005.06 | | 2005.06 2005.12 | 2005.12 2009.04 | | 2009.04 2011.10 | 2011.10 2013.03 | | 2013.03 2014.03 | 2014.03 2016.07 | | 2016.07 2017.10 | | | 2017.10 | | | |