| | | 1970 10 | | 2000 6 | 1991 9 | | | : | 1991.09 2001.07 | | 2001.07 2006.06 | | 1999.08 2001.12 | | 2006.06 2008.07 | | 2008.07 2013.05 | | 2013.05 2015.03 | 2013. | 05 2015.09 | | 2015.03 2017.10 | | | 2017.10 2017.12 | | | | 2017.12 2019.03 | | | 2019.03 | |