| 2022 | |||||
| 2021 | 2020 no champsionship due to COVID-19 | 2019 | 2018 | 2017 | 2016 |
| 2015 | 2014 | 2013 | 2012 | 2011 | 2010 |
| 2009 | 2008 | 2007 | 2006 | 2005 | 2004 |
| 2003 | 2002 | 2001 | 2000 | 1999 | 1998 |
| 1997 | 1996 | 1995 | 1994 | 1993 | 1992 |
| 1991 | 1990 | 1989 | 1988 | 1987 | 1986 |
| 1985 | 1984 | 1983 | 1982 | 1981 | 1980 |
| 1979 | 1978 | 1977 | 1976 | 1975 | 1974 |
| 1973 | 1972 | 1971 | 1970 | 1969 | 1968 |