1951 - 1960 1954

1961 - 1970 1962 1965 1967 1968

1971 - 1980 1971 1972 1973 1975 1976 1977 1978 1979

1981 - 1990 1981 1983 1985 1987 1989

1991 - 2000 1992 1994 1995 1998 1999

2001 - 2010 2003 2005 2008 2009 2010

2011 - ... 2014