| Since | Country | % Correct |
|---|---|---|
| 1987 | United States | 98%
|
| 1987 | Canada | 96%
|
| 2001 | South Korea | 96%
|
| 1987 | Italy | 95%
|
| 1987 | Japan | 95%
|
| 1987 | Norway | 95%
|
| 1987 | France | 94%
|
| 1987 | Sweden | 94%
|
| 1987 | Finland | 93%
|
| 1987 | Spain | 93%
|
| 1987 | United Kingdom | 93%
|
| 1987 | New Zealand | 90%
|
| 1987 | Denmark | 89%
|
| 1987 | Luxembourg | 89%
|
| 1987 | Switzerland | 89%
|
| 1987 | Australia | 88%
|
| 1994 | Monaco | 88%
|
| 1994 | Portugal | 88%
|
| 1987 | United Arab Emirates | 88%
|
| 1987 | Germany | 87%
|
| 2023 | Russia | 87%
|
| 1987 | Singapore | 87%
|
| 1987 | Ireland | 85%
|
| 1987 | Netherlands | 85%
|
| 2004 | Saudi Arabia | 85%
|
| 1987 | Austria | 84%
|
| 1987 | Belgium | 84%
|
| 1994 | Liechtenstein | 84%
|
| 2012 | Lithuania | 83%
|
| 2009 | Poland | 83%
|
| 1987 | Taiwan | 83%
|
| 2006 | Estonia | 82%
|
| 1996 | Greece | 82%
|
| 2017 | Croatia | 80%
|
| 1987 | Iceland | 80%
|
| 2012 | Latvia | 80%
|
| 1987 | Qatar | 80%
|
| 2006 | Czech Republic | 79%
|
| 2021 | Romania | 79%
|
| 1990 | Andorra | 78%
|
| 1987 | Kuwait | 78%
|
| 2007 | Oman | 78%
|
| 2007 | Slovakia | 78%
|
| 1997 | Slovenia | 78%
|
| 2014 | Hungary | 77%
|
| 1987 | Israel | 74%
|
| 2000 | San Marino | 74%
|
| 2001 | Bahrain | 72%
|
| 2012 | Chile | 72%
|
| 2024 | Bulgaria | 70%
|
| 2002 | Malta | 67%
|
| 1988 | Cyprus | 60%
|
| 1987 | Bahamas | 57%
|
| 2021 | Panama | 57%
|
| 2012 | Uruguay | 55%
|
| 1990 | Brunei | 54%
|
| 2006 | Barbados | 51%
|
| 2014 | Seychelles | 50%
|
| 2022 | Guyana | 41%
|
| 2012 | Antigua and Barbuda | 40%
|
| 2011 | Saint Kitts and Nevis | 39%
|
| 2006 | Trinidad and Tobago | 39%
|
| 2023 | Palau | 23%
|
| 2019 | Nauru | 20%
|