| | | | 1960 2 1976 | 11 1986 6 | | | | 1995 9 - 1999 2 | | 1999 2 - 2001 4 | | 2001 4 - 2003 8 | | | 2003 8 - 2004 12 | | | 2004 12 - 2006 10 | | | 2006 10 - 2006 11 | | | 2006 11 - 2007 12 | | | 2007 12 - 2011 8 | | 2011 8 - 2012 3 | | 2012 3 - 2014 8 | | 2014 8 - 2015 4 | | 2015 4 - 2017 6 | | | 2017 6 - 2017 7 | | 2017 7 - | | |