1968 1972a 1972b 1973 1974
1976 1977* 1979a 1979b* 1980a
1980b 1981 1982 1983 1984
1986 1988a 1988b* 1990 1991
1992 1993 1996a 1996b 1997
1998* 1999 2000* 2001 2003
2004a* 2004b 2004c 2007 2008
2010 2013 2014