| | | | | 1961 6 | 1983 7 | | 1983 7 1988 12 | | | 1988 12 1990 2 | | | 1990 2 1993 7 | | 1993 7 1995 8 | | | 1995 8 1997 5 | | 1997 5 1999 4 | | 1999 4 2002 1 | | 2002 1 2003 12 | | 2003 12 2005 4 | | 2005 4 2012 4 | | | 2012 3 2017 | | |