| Country | signatures |
| United States | 715 |
| United Kingdom | 710 |
| Germany | 435 |
| Netherlands | 218 |
| Austria | 146 |
| India | 109 |
| South Africa | 94 |
| France | 78 |
| Australia | 69 |
| Poland | 62 |
| other | 57 |
| Canada | 52 |
| Norway | 39 |
| Italy | 27 |
| Switzerland | 26 |
| New Zealand | 20 |
| Sweden | 18 |
| Belgium | 17 |
| Brazil | 15 |
| Ireland | 14 |
| Portugal | 7 |
| Spain | 5 |
| Romania | 4 |
| Hungary | 4 |
| Finland | 4 |
| Denmark | 4 |
| Czech Republic | 3 |
| Iceland | 2 |
| Greece | 2 |
| Andorra | 2 |
| Russia | 2 |
| Cyprus | 2 |
| Lithuania | 1 |
| Luxembourg | 1 |
| Slovakia | 1 |
| Bulgaria | 1 |
| Malta | 1 |
| Slovenia | 1 |