Iceland 11 April 2002 Ireland Italy Liechtenstein 11 February 1989 2 December 1990 Luxembourg Malta Monaco Netherlands New Zealand Norway 29 October 1987 13 October 1990 6 January 1992 20 January 1989 9 January 1990 Paraguay 26 June 1987 29 May 2002 Peru 7 July 1988 Poland 12 June 1993 Portugal 11 March 1989 Russian Federation Senegal 1 October 1991 16 October 1996 Serbia and Montenegro 12 March 2001 Slovakia 17 April 1995 Slovenia 16 July 1993 South Africa 10 December 1998 20 November 1987 Spain Sweden Switzerland Togo Tunisia Turkey Uruguay Venezuela 26 June 1987 26 June 1987 8 December 1987 23 October 1988 1 September 1988 26 June 1987 26 April 1994 States parties that have only made the declaration provided forin article 21 of the Convention, as at 16 May 2003 Japan Uganda United Kingdom of Great Britain and Northern Ireland United States of America States parties that have only made the declaration provided forin article 22 of the 29 June 1999 19 December 2001 8 December 1988 21 October 1994