| Year Signed | Country | % Correct |
|---|---|---|
| 2003 | United Kingdom | 100%
|
| 1996 | France | 95%
|
| 1978 | Germany | 90%
|
| 1934 | Iraq | 90%
|
| 1983 | Israel | 90%
|
| 1970 | Spain | 90%
|
| 1996 | Antigua and Barbuda | 85%
|
| 1996 | Barbados | 85%
|
| 1961 | Brazil | 85%
|
| 2007 | Bulgaria | 85%
|
| 1971 | Canada | 85%
|
| 1900 | Chile | 85%
|
| 1979 | Colombia | 85%
|
| 1982 | Costa Rica | 85%
|
| 1901 | Croatia | 85%
|
| 1925 | Czech Republic | 85%
|
| 2015 | Dominican Republic | 85%
|
| 2006 | Estonia | 85%
|
| 1931 | Greece | 85%
|
| 1903 | Guatemala | 85%
|
| 1904 | Haiti | 85%
|
| 1909 | Honduras | 85%
|
| 1994 | Hungary | 85%
|
| 1902 | Iceland | 85%
|
| 1983 | Ireland | 85%
|
| 1983 | Italy | 85%
|
| 1978 | Japan | 85%
|
| 2001 | Lithuania | 85%
|
| 1978 | Mexico | 85%
|
| 1939 | Monaco | 85%
|
| 1901 | Montenegro | 85%
|
| 1904 | Panama | 85%
|
| 1998 | Paraguay | 85%
|
| 2001 | Peru | 85%
|
| 1908 | Portugal | 85%
|
| 1996 | Saint Kitts and Nevis | 85%
|
| 1996 | Saint Lucia | 85%
|
| 1996 | Saint Vincent and the Grenadines | 85%
|
| 2016 | Serbia | 85%
|
| 1925 | Slovakia | 85%
|
| 1990 | Switzerland | 85%
|
| 1973 | Uruguay | 85%
|
| 1922 | Venezuela | 85%
|
| 1997 | Argentina | 80%
|
| 1974 | Australia | 80%
|
| 1987 | Belgium | 80%
|
| 1995 | Bolivia | 80%
|
| 1901 | Bosnia and Herzegovina | 80%
|
| 1996 | Dominica | 80%
|
| 1872 | Ecuador | 80%
|
| 1911 | El Salvador | 80%
|
| 1976 | Finland | 80%
|
| 1931 | Ghana | 80%
|
| 1931 | Guyana | 80%
|
| 1997 | India | 80%
|
| 2005 | Latvia | 80%
|
| 1996 | Luxembourg | 80%
|
| 1995 | Malaysia | 80%
|
| 2006 | Malta | 80%
|
| 1970 | New Zealand | 80%
|
| 1905 | Nicaragua | 80%
|
| 1901 | North Macedonia | 80%
|
| 1977 | Norway | 80%
|
| 1994 | Philippines | 80%
|
| 1996 | Poland | 80%
|
| 2007 | Romania | 80%
|
| 1906 | San Marino | 80%
|
| 2001 | Slovenia | 80%
|
| 1999 | South Africa | 80%
|
| 1998 | South Korea | 80%
|
| 1887 | Suriname | 80%
|
| 1961 | Sweden | 80%
|
| 1983 | Thailand | 80%
|
| 1996 | Trinidad and Tobago | 80%
|
| 1979 | Turkey | 80%
|
| 1998 | Austria | 75%
|
| 1990 | Bahamas | 75%
|
| 2000 | Belize | 75%
|
| 1904 | Cuba | 75%
|
| 1874 | Egypt | 75%
|
| 1983 | Jamaica | 75%
|
| 1931 | Kenya | 75%
|
| 1936 | Liechtenstein | 75%
|
| 1980 | Netherlands | 75%
|
| 1931 | Nigeria | 75%
|
| 1931 | Singapore | 75%
|
| 1931 | Zambia | 75%
|
| 1996 | China (Hong Kong) | 70%
|
| 1996 | Cyprus | 70%
|
| 1972 | Denmark | 70%
|
| 1931 | Fiji | 70%
|
| 1996 | Grenada | 70%
|
| 1972 | Kiribati | 70%
|
| 2003 | Marshall Islands | 70%
|
| 2003 | Micronesia | 70%
|
| 1986 | Palau | 70%
|
| 1931 | Tonga | 70%
|
| 1972 | Tuvalu | 70%
|
| 1933 | Albania | 65%
|
| 1995 | Jordan | 65%
|
| 2016 | Kosovo | 65%
|
| 1931 | Mauritius | 65%
|
| 1931 | Nauru | 65%
|
| 1931 | Pakistan | 65%
|
| 1931 | Papua New Guinea | 65%
|
| 1931 | Seychelles | 65%
|
| 1931 | Sierra Leone | 65%
|
| 1931 | Tanzania | 65%
|
| 1997 | Zimbabwe | 65%
|
| 1937 | Liberia | 60%
|
| 1931 | Malawi | 60%
|
| 1999 | Sri Lanka | 60%
|
| 1931 | Myanmar | 55%
|
| 1909 | Republic of the Congo | 55%
|
| 1931 | Eswatini | 50%
|
| 1931 | Gambia | 50%
|
| 1931 | Lesotho | 50%
|