1951 - 1960 1954 1956 1958 1960

1961 - 1970 1962 1964 1966 1967 1968 1969 1970

1971 - 1980 1972 1974 1976 1977 1978 1980

1981 - 1990 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990

1991 - 2000 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000

2001 - 2003 2001 2002 2003