| 1956 | 1991 | ||
| 1957 | 1992 | ||
| 1958 | 1993 | ||
| 1959 | 1994 | ||
| 1960 | 1995 | ||
| 1961 | 1996 | ||
| 1962 | 1997 | ||
| 1963 | 1998 | ||
| 1964 | 1999 | ||
| 1965 | 2000 | ||
| 1966 | 2001 | ||
| 1967 | 2002 | ||
| 1968 | 2003 | ||
| 1969 | 2004 | ||
| 1970 | 2005 | ||
| 1971 | 2006 | ||
| 1972 | 2007 | ||
| 1973 | 2008 | ||
| 1974 | 2009 | ||
| 1975 | 2010 | ||
| 1976 | 2011 | ||
| 1977 | 2012 | ||
| 1978 | 2013 | ||
| 1979 | 2014 | ||
| 1980 | 2015 | ||
| 1981 | 2016 | ||
| 1982 | 2017 | ||
| 1983 | 2018 | ||
| 1984 | |||
| 1985 | |||
| 1986 | |||
| 1987 | |||
| 1988 | |||
| 1989 | |||
| 1990 |