| Year Signed | Country | % Correct |
|---|---|---|
| 2003 | United Kingdom | 100%
|
| 1996 | France | 95%
|
| 1978 | Germany | 90%
|
| 1983 | Israel | 90%
|
| 1970 | Spain | 90%
|
| 1996 | Antigua and Barbuda | 86%
|
| 1996 | Barbados | 86%
|
| 1961 | Brazil | 86%
|
| 2007 | Bulgaria | 86%
|
| 1971 | Canada | 86%
|
| 1900 | Chile | 86%
|
| 1979 | Colombia | 86%
|
| 1982 | Costa Rica | 86%
|
| 1901 | Croatia | 86%
|
| 1925 | Czech Republic | 86%
|
| 2015 | Dominican Republic | 86%
|
| 2006 | Estonia | 86%
|
| 1931 | Greece | 86%
|
| 1903 | Guatemala | 86%
|
| 1904 | Haiti | 86%
|
| 1909 | Honduras | 86%
|
| 1994 | Hungary | 86%
|
| 1902 | Iceland | 86%
|
| 1934 | Iraq | 86%
|
| 1983 | Ireland | 86%
|
| 1983 | Italy | 86%
|
| 1978 | Japan | 86%
|
| 2001 | Lithuania | 86%
|
| 1978 | Mexico | 86%
|
| 1939 | Monaco | 86%
|
| 1901 | Montenegro | 86%
|
| 1904 | Panama | 86%
|
| 1998 | Paraguay | 86%
|
| 2001 | Peru | 86%
|
| 1908 | Portugal | 86%
|
| 1996 | Saint Kitts and Nevis | 86%
|
| 1996 | Saint Lucia | 86%
|
| 1996 | Saint Vincent and the Grenadines | 86%
|
| 2016 | Serbia | 86%
|
| 1925 | Slovakia | 86%
|
| 1990 | Switzerland | 86%
|
| 1922 | Venezuela | 86%
|
| 1997 | Argentina | 81%
|
| 1974 | Australia | 81%
|
| 1987 | Belgium | 81%
|
| 1995 | Bolivia | 81%
|
| 1901 | Bosnia and Herzegovina | 81%
|
| 1996 | Dominica | 81%
|
| 1872 | Ecuador | 81%
|
| 1911 | El Salvador | 81%
|
| 1976 | Finland | 81%
|
| 1931 | Ghana | 81%
|
| 1931 | Guyana | 81%
|
| 1997 | India | 81%
|
| 2005 | Latvia | 81%
|
| 1996 | Luxembourg | 81%
|
| 1995 | Malaysia | 81%
|
| 2006 | Malta | 81%
|
| 1970 | New Zealand | 81%
|
| 1905 | Nicaragua | 81%
|
| 1901 | North Macedonia | 81%
|
| 1977 | Norway | 81%
|
| 1994 | Philippines | 81%
|
| 1996 | Poland | 81%
|
| 2007 | Romania | 81%
|
| 1906 | San Marino | 81%
|
| 2001 | Slovenia | 81%
|
| 1999 | South Africa | 81%
|
| 1998 | South Korea | 81%
|
| 1887 | Suriname | 81%
|
| 1961 | Sweden | 81%
|
| 1983 | Thailand | 81%
|
| 1996 | Trinidad and Tobago | 81%
|
| 1979 | Turkey | 81%
|
| 1973 | Uruguay | 81%
|
| 1998 | Austria | 76%
|
| 1990 | Bahamas | 76%
|
| 2000 | Belize | 76%
|
| 1904 | Cuba | 76%
|
| 1874 | Egypt | 76%
|
| 1983 | Jamaica | 76%
|
| 1931 | Kenya | 76%
|
| 1936 | Liechtenstein | 76%
|
| 1980 | Netherlands | 76%
|
| 1931 | Nigeria | 76%
|
| 1931 | Singapore | 76%
|
| 1931 | Zambia | 76%
|
| 1996 | China (Hong Kong) | 71%
|
| 1996 | Cyprus | 71%
|
| 1972 | Denmark | 71%
|
| 1931 | Fiji | 71%
|
| 1996 | Grenada | 71%
|
| 1972 | Kiribati | 71%
|
| 2003 | Marshall Islands | 71%
|
| 2003 | Micronesia | 71%
|
| 1986 | Palau | 71%
|
| 1931 | Tonga | 71%
|
| 1972 | Tuvalu | 71%
|
| 1933 | Albania | 67%
|
| 1995 | Jordan | 67%
|
| 2016 | Kosovo | 67%
|
| 1931 | Mauritius | 67%
|
| 1931 | Nauru | 67%
|
| 1931 | Pakistan | 67%
|
| 1931 | Papua New Guinea | 67%
|
| 1931 | Seychelles | 67%
|
| 1931 | Sierra Leone | 67%
|
| 1931 | Tanzania | 67%
|
| 1997 | Zimbabwe | 67%
|
| 1937 | Liberia | 62%
|
| 1931 | Malawi | 62%
|
| 1931 | Myanmar | 57%
|
| 1909 | Republic of the Congo | 57%
|
| 1999 | Sri Lanka | 57%
|
| 1931 | Eswatini | 52%
|
| 1931 | Gambia | 52%
|
| 1931 | Lesotho | 52%
|