| Country | Count | Mean |
|---|---|---|
| United States | 77 | 8.48 |
| United Kingdom | 23 | 8.96 |
| Australia | 23 | 8.24 |
| Canada | 11 | 8.01 |
| Sweden | 3 | 6.33 |
| Netherlands | 2 | 8.80 |
| Brazil | 2 | 8.00 |
| Uruguay | 1 | 7.00 |
| Indonesia | 1 | 7.00 |
| Poland | 1 | 7.00 |
| Ireland | 1 | 7.00 |
| Finland | 1 | 5.60 |
| Germany | 1 | 9.00 |
| Ecuador | 1 | 10.00 |
| Mexico | 1 | 9.00 |
| Hungary | 1 | 9.00 |
| Singapore | 1 | 8.50 |