1965	1966	1967a	1967b	1968a
1968b	1969a	1969b**	1971*	1976
1977	1978a	1978b	1981	1982a
1982b	1983	1984	1986*	1990
1991	1992	1996a*	1996b	1998
1999a	1999b	2001	2002	2003a*
2003b	2003c	2003d	2004	2006a
2006b	2010a	2010b	2010c	2011
2014	2016*	2018