| 1977 | 12 | 1995 9 1998 7 | | 1989 7 1999 11 | | 1999 11 2000 11 | | 2000 11 2001 12 | | 2001 6 2001 12 | | 2001 12 2004 1 | | 2004 1 2007 4 | | 2002 9 2004 12 | | 2006 9 2006 12 | | 2007 4 2007 8 | | 2007 8 2009 12 | | | 2009 12 2011 5 | | | 2011 5 2012 5 | | | | 2012 5 2014 8 | | | 2014 8 2017 10 | | | 2017 10 | |