Ratifying countries
- 1986 - Haiti
- 1986 - Honduras
- 1986 - Guatemala
- 1986 - Dominican Republic
- 1987 - Mexico
- 1987 - Suriname
- 1988 - Chile
- 1989 - Brazil
- 1989 - Argentina
- 1990 - Peru
- 1990 - Paraguay
- 1991 - Venezuela
- 1991 - Panama
- 1992 - Uruguay
- 1994 - El Salvador
- 1998 - Colombia
- 1999 - Ecuador
- 1999 - Costa Rica
- 2006 - Bolivia
- 2009 - Nicaragua
