| | | 1989 8 1998 8 | | 1989.8 1994.7 | | | 1994.8 1999.7 | | | 1998.8 2002.5 | | | | 2002.6 2006.3 | | 2006.4 2008.2 | | 2008.2 2011.9 | | 2011.9 2014.12 | | | 2014.12 2019.6 | | | 2019.6 | | | | | | |