1961 - 1970 1962 1965 1966 1967 1968 1969

1971 - 1980 1972 1973 1974 1976 1977 1978 1979 1980

1981 - 1990 1981 1982 1984 1985 1986 1987 1989

1991 - 2000 1993 1995 1996 1997 1998 1999 2000

2001 - ... 2001 2002 2003 2005 2008 2009