| | | | | | | | 1979 6 | 1999 11 2011 12 | | 1999.11-2002.09 | | 2002.09-2006.05 | 2000.09-2004.07 | | 2006.05-2008.08 | | 2008.08-2009.11 | 2007.08-2010.01 | | 2009.11-2010.07 | 2012.05-2012.11 | | 2010.07-2012.11 2015.10-2015.12 | | | 2016.07-2017.02 | | 2017.02-2019.01 | | 2019.01-2021.06 | | | | 2021.06- |