| Country | Count | Mean |
|---|---|---|
| United States | 64 | 8.39 |
| Australia | 38 | 7.98 |
| Austria | 22 | 9.52 |
| United Kingdom | 18 | 8.41 |
| Canada | 9 | 8.14 |
| Finland | 5 | 6.54 |
| Netherlands | 4 | 8.38 |
| Germany | 3 | 7.50 |
| France | 3 | 8.87 |
| Italy | 3 | 8.33 |
| Sweden | 2 | 7.75 |
| Norway | 2 | 8.95 |
| Greece | 1 | 8.00 |
| Bulgaria | 1 | 10.00 |
| Ireland | 1 | 8.00 |
| Spain | 1 | 7.00 |
| Portugal | 1 | 8.20 |
| Denmark | 1 | 10.00 |
| Hungary | 1 | 9.00 |
| Japan | 1 | 9.00 |
| Estonia | 1 | 9.00 |
| Brazil | 1 | 9.00 |