| | 1986.9___1989.7 | | 1989.10___1996.10 | | 1991.9___1995.12 | | | 1996.10___2001.8 | | 2001.8____2002.10 | 2002.10____2005.5 | 2005.5____2011.5 | 2003.9___2005.12 | | | 2011.5____ | | | | | | | | |