| Country | Count | Mean |
|---|---|---|
| United States | 164 | 6.94 |
| Australia | 53 | 6.54 |
| United Kingdom | 48 | 8.73 |
| Canada | 21 | 7.31 |
| Germany | 6 | 5.58 |
| Brazil | 3 | 7.17 |
| Netherlands | 3 | 7.80 |
| Finland | 3 | 5.43 |
| Sweden | 2 | 5.00 |
| France | 2 | 5.60 |
| Italy | 2 | 7.20 |
| Belgium | 2 | 7.75 |
| Norway | 1 | 6.00 |
| Lebanon | 1 | 2.00 |
| Hungary | 1 | 10.00 |
| Japan | 1 | 6.00 |
| Mexico | 1 | 7.00 |
| Ireland | 1 | 6.40 |
| Denmark | 1 | 8.00 |