| # | Since | Country | % Correct |
|---|---|---|---|
| 4,232 | 1952 | United States | 99%
|
| 842 | 1965 | United Kingdom | 97%
|
| 4,564 | 1987 | China | 95%
|
| 1,181 | 1970 | Japan | 91%
|
| 636 | 1953 | Canada | 90%
|
| 322 | 1963 | Mexico | 88%
|
| 153 | 1968 | Germany | 87%
|
| 608 | 2000 | Russia | 85%
|
| 600 | 1968 | Australia | 84%
|
| 372 | 1995 | India | 83%
|
| 170 | 1984 | South Korea | 72%
|
| 465 | 1979 | Indonesia | 68%
|
| 531 | 1984 | Thailand | 64%
|
| 579 | 1973 | Malaysia | 59%
|
| 848 | 1971 | South Africa | 58%
|
| 237 | 1967 | Philippines | 57%
|
| 224 | 1993 | Poland | 56%
|
| 184 | 1975 | Saudi Arabia | 44%
|