| Contracting Party | Status | Date | Details |
|---|
| Albania | In Force | June 26, 2001 | Details |
| Argentina | In Force | June 30, 1973 | Details |
| Armenia | In Force | January 31, 2003 | Details |
| Australia | In Force | June 22, 1974 | Details |
| Austria | In Force | August 21, 1982 | Details |
| Azerbaijan | In Force | September 1, 2001 | Details |
| Barbados | In Force | July 29, 1983 | Details |
| Belarus | In Force | April 17, 2003 | Details |
| Bosnia and Herzegovina | In Force | May 25, 2009 | Details |
| Brazil | In Force | November 28, 1975 | Details |
| Bulgaria | In Force | September 6, 1995 | Details |
| Burkina Faso | In Force | January 30, 1988 | Details |
| Canada | | | Details |
| Chile | In Force | March 24, 1977 | Details |
| China | In Force | April 30, 1993 | Details |
| Colombia | In Force | May 16, 1994 | Details |
| Costa Rica | In Force | June 17, 1982 | Details |
| Croatia | In Force | April 20, 2000 | Details |
| Cyprus | In Force | September 30, 1993 | Details |
| Czech Republic | In Force | January 1, 1993 | Details |
| Democratic Republic of the Congo | In Force | November 29, 1977 | Details |
| Denmark | In Force | March 24, 1977 | Details |
| Ecuador | In Force | September 14, 1974 | Details |
| Egypt | In Force | April 23, 1978 | Details |
| El Salvador | In Force | February 9, 1979 | Details |
| Estonia | In Force | May 28, 2000 | Details |
| Fiji | In Force | April 18, 1973 | Details |
| Finland | In Force | April 18, 1973 | Details |
| France | In Force | April 18, 1973 | Details |
| Germany | In Force | May 18, 1974 | Details |
| Greece | In Force | February 9, 1994 | Details |
| Guatemala | In Force | February 1, 1977 | Details |
| Holy See | In Force | July 18, 1977 | Details |
| Honduras | In Force | March 6, 1990 | Details |
| Hungary | In Force | May 28, 1975 | Details |
| India | In Force | February 12, 1975 | Details |
| Iran (Islamic Republic of) | | | Details |
| Israel | In Force | May 1, 1978 | Details |
| Italy | In Force | March 24, 1977 | Details |
| Jamaica | In Force | January 11, 1994 | Details |
| Japan | In Force | October 14, 1978 | Details |
| Kazakhstan | In Force | August 3, 2001 | Details |
| Kenya | In Force | April 21, 1976 | Details |
| Kyrgyzstan | In Force | October 12, 2002 | Details |
| Latvia | In Force | August 23, 1997 | Details |
| Liberia | In Force | December 16, 2005 | Details |
| Liechtenstein | In Force | October 12, 1999 | Details |
| Lithuania | In Force | January 27, 2000 | Details |
| Luxembourg | In Force | March 8, 1976 | Details |
| Mexico | In Force | December 21, 1973 | Details |
| Monaco | In Force | December 2, 1974 | Details |
| Montenegro | In Force | June 3, 2006 | Details |
| Netherlands | In Force | October 12, 1993 | Details |
| New Zealand | In Force | August 13, 1976 | Details |
| Nicaragua | In Force | August 10, 2000 | Details |
| Norway | In Force | August 1, 1978 | Details |
| Panama | In Force | June 29, 1974 | Details |
| Paraguay | In Force | February 13, 1979 | Details |
| Peru | In Force | August 24, 1985 | Details |
| Philippines | | | Details |
| Republic of Korea | In Force | October 10, 1987 | Details |
| Republic of Moldova | In Force | July 17, 2000 | Details |
| Romania | In Force | October 1, 1998 | Details |
| Russian Federation | In Force | March 13, 1995 | Details |
| Saint Lucia | In Force | April 2, 2001 | Details |
| Serbia | In Force | June 10, 2003 | Details |
| Slovakia | In Force | January 1, 1993 | Details |
| Slovenia | In Force | October 15, 1996 | Details |
| Spain | In Force | August 24, 1974 | Details |
| Sweden | In Force | April 18, 1973 | Details |
| Switzerland | In Force | September 30, 1993 | Details |
| The former Yugoslav Republic of Macedonia | In Force | March 2, 1998 | Details |
| Togo | In Force | June 10, 2003 | Details |
| Trinidad and Tobago | In Force | October 1, 1988 | Details |
| Ukraine | In Force | February 18, 2000 | Details |
| United Kingdom | In Force | April 18, 1973 | Details |
| United States of America | In Force | March 10, 1974 | Details |
| Uruguay | In Force | January 18, 1983 | Details |
| Venezuela (Bolivarian Republic of) | In Force | November 18, 1982 | Details |
| Viet Nam | In Force | July 6, 2005 | Details |
