| ` | | | | | | | | | | | | | | 1968 4 | | 1990 7 1998 7 | | | | | 1990.7 1994.6 | | 1994.6 1999.10 | | 1999.10 2002.5 | | 2002.5 2002.11 | | 2002.11 2003.11 | | 2003.11 2006.1 | | 2006 .1 2013.4 | | | 2013.4 2014.12 | | 2014.12 2017.12 | | 2017.12 | |