1951 - 1960 1960

1961 - 1970 1961 1962 1963 1964 1965 1967 1969

1971 - 1980 1973 1975 1976 1977 1978 1979 1980

1981 - 1990 1981 1982 1983 1984 1985 1986 1987

1991 - 2000 1992 1994 1995 1996 1997 1998 1999 2000

2011 - ... 2014