| Year | Winner | % Correct |
|---|---|---|
| 2000 | Czech Republic | 100%
|
| 2011 | Czech Republic | 100%
|
| 2012 | Czech Republic | 100%
|
| 2014 | Czech Republic | 100%
|
| 2015 | Czech Republic | 100%
|
| 2016 | Czech Republic | 100%
|
| 2018 | Czech Republic | 100%
|
| 1963 | United States | 100%
|
| 1966 | United States | 100%
|
| 1967 | United States | 100%
|
| 1969 | United States | 100%
|
| 1976 | United States | 100%
|
| 1977 | United States | 100%
|
| 1978 | United States | 100%
|
| 1979 | United States | 100%
|
| 1980 | United States | 100%
|
| 1981 | United States | 100%
|
| 1982 | United States | 100%
|
| 1986 | United States | 100%
|
| 1989 | United States | 100%
|
| 1990 | United States | 100%
|
| 1996 | United States | 100%
|
| 1999 | United States | 100%
|
| 2017 | United States | 100%
|
| United States | 100%
| |
| 1964 | Australia | 96%
|
| 1965 | Australia | 96%
|
| 1968 | Australia | 96%
|
| 1970 | Australia | 96%
|
| 1971 | Australia | 96%
|
| 1973 | Australia | 96%
|
| 1974 | Australia | 96%
|
| Australia | 96%
| |
| 1997 | France | 96%
|
| 2003 | France | 96%
|
| France | 96%
| |
| 1992 | Germany | 96%
|
| Germany | 96%
| |
| 2006 | Italy | 96%
|
| 2009 | Italy | 96%
|
| 2010 | Italy | 96%
|
| 2013 | Italy | 96%
|
| Italy | 96%
| |
| 1991 | Spain | 96%
|
| 1993 | Spain | 96%
|
| 1994 | Spain | 96%
|
| 1995 | Spain | 96%
|
| 1998 | Spain | 96%
|
| Spain | 96%
| |
| 2001 | Belgium | 91%
|
| Belgium | 91%
| |
| Great Britain | 91%
| |
| 2004 | Russia | 91%
|
| 2005 | Russia | 91%
|
| 2007 | Russia | 91%
|
| 2008 | Russia | 91%
|
| Russia | 91%
| |
| Serbia | 78%
| |
| Soviet Union | 78%
| |
| 1975 | Czechoslovakia | 70%
|
| 1983 | Czechoslovakia | 70%
|
| 1984 | Czechoslovakia | 70%
|
| 1985 | Czechoslovakia | 70%
|
| 1988 | Czechoslovakia | 70%
|
| Czechoslovakia | 70%
| |
| Netherlands | 70%
| |
| Switzerland | 70%
| |
| 2002 | Slovakia | 65%
|
| Belarus | 52%
| |
| 1972 | South Africa | 48%
|
| South Africa | 48%
| |
| 1987 | West Germany | 48%
|
| West Germany | 48%
|