| Country | Count | Mean |
|---|---|---|
| United States | 129 | 6.44 |
| United Kingdom | 48 | 7.09 |
| Australia | 44 | 7.28 |
| Canada | 20 | 6.99 |
| France | 3 | 6.47 |
| Germany | 3 | 5.30 |
| Brazil | 2 | 6.50 |
| Greece | 2 | 4.50 |
| Netherlands | 2 | 8.10 |
| Portugal | 1 | 6.00 |
| Uruguay | 1 | 4.00 |
| Finland | 1 | 6.00 |
| Sweden | 1 | 6.00 |
| Hungary | 1 | 8.00 |
| Ireland | 1 | 8.50 |
| Bulgaria | 1 | 9.00 |
| Russian Federation | 1 | 8.00 |
| Thailand | 1 | 7.50 |
| Czech Republic | 1 | 7.00 |
| Italy | 1 | 7.00 |