| Country | Count | Mean |
|---|---|---|
| United States | 60 | 8.73 |
| United Kingdom | 59 | 9.02 |
| Australia | 49 | 8.46 |
| Canada | 12 | 8.78 |
| Germany | 4 | 8.85 |
| Finland | 3 | 9.00 |
| Ireland | 2 | 7.75 |
| Norway | 2 | 8.70 |
| Greece | 2 | 8.50 |
| Austria | 2 | 9.50 |
| New Zealand | 1 | 8.00 |
| Denmark | 1 | 8.00 |
| Sweden | 1 | 7.00 |
| Czech Republic | 1 | 7.00 |
| Belgium | 1 | 8.00 |
| Portugal | 1 | 7.80 |
| Italy | 1 | 9.50 |
| Netherlands | 1 | 10.00 |
| Bulgaria | 1 | 10.00 |
| Puerto Rico | 1 | 9.90 |
| Hungary | 1 | 9.00 |
| Estonia | 1 | 8.00 |