1972	1974	1975a	1975b	1976
1978	1979	1981	1982	1983
1984	1985	1986	1987a	1987b
1988	1990	1991	1992	1993
1994	1995	1996a	1996b	1997a
1998a	1998b	1999	2000	2001
2002	2003a	2003b	2003c	2003d
2004a	2004b	2005a	2005b	2005c
2006	2006b	2006c	2007a	2007b
2009a	2009b	2010	2011a	2011b