| Rank | Nation | # of Procedures | % Correct |
|---|---|---|---|
| 1. | United States | 3,996,631 | 99%
|
| 2. | Brazil | 2,141,257 | 85%
|
| 3. | Mexico | 884,353 | 80%
|
| 5. | Spain | 447,177 | 76%
|
| 9. | Argentina | 287,823 | 75%
|
| 4. | Germany | 654,115 | 73%
|
| 7. | Italy | 375,256 | 71%
|
| 6. | Colombia | 420,177 | 62%
|
| 8. | Venezuela | 291,388 | 55%
|
| 10. | Iran | 174,778 | 25%
|