| | | | | 1975 11 | | 1998 6 | 1999 7 | | 1996.09 1999.07 | | | 1999.07 2001.10 | 1998.09 2001. | 07 | | 2001.10 2004.05 | | 2004.05 2006.12 | | 2006.12 2009.11 | 2009.06 2009. | 10 | | 2009.11 2011.02 | | 2007.09 | 2010.06 | | 2011.02 2011.12 | | | 2011.12 2012.10 | | 2012.10 2016.07 | | 2016.07 2018.05 | | 2018.05 2019.01 | | 2019.01 2019.06 | | | 2019.06 2020.01 | | | 2020.01 2020.04 | | 2020.04 | |