1970 8 | | 2005 5 1990 | 8 | | 1988.08 1990.07 | | 1990.08 1999.06 | 1999.06 2001.08 | | 2001.08 2008.06 | | 2008.06 2009.11 | | 2009.11 2012.06 | | 2012.06 2013.05 | | 2013.05 2017.12 | | 2017.12 | | | | | | | | | | |