List A (Former Category I Countries)
| State | Ratification (R) or Accession (A) | |
|---|---|---|
| Austria | 12-Dec-77 | (R) |
| Belgium | 09-Dec-77 | (R) |
| Canada | 28-Nov-77 | (R) |
| Denmark | 28-Jun-77 | (R) |
| Finland | 30-Nov-77 | (R) |
| France | 12-Dec-77 | (R) |
| Germany | 14-Oct-77 | (R) |
| Greece * | 30-Nov-78 | (R) |
| Iceland | 08-Aug-01 | (A) |
| Ireland | 14-Oct-77 | (R) |
| Italy | 10-Dec-77 | (R) |
| Japan | 25-Oct-77 | (R) |
| Luxembourg | 09-Dec-77 | (R) |
| Netherlands | 29-Jul-77 | (R) |
| New Zealand | 10-Oct-77 | (R) |
| Norway | 08-Jul-77 | (R) |
| Portugal * | 30-Nov-78 | (R) |
| Spain | 27-Nov-78 | (R) |
| Sweden | 17-Jun-77 | (R) |
| Switzerland | 21-Oct-77 | (R) |
| United Kingdom | 09-Sep-77 | (R) |
| United States | 04-Oct-77 | (R) |
| Greece:
Reclassified to Category I from Category III on 24 January 1989.
Portugal: Reclassified to Category I from Category III on 29 May 1991. |
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