| Recipient Residency | Year | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | |
| Total | 3,400 | 3,716 | 4,157 | 4,487 | 4,853 | 5,298 | 5,852 | 6,386 | 6,731 |
| U.S. Resident | 3,371 | 3,689 | 4,136 | 4,470 | 4,839 | 5,283 | 5,839 | 6,374 | 6,722 |
| Unknown | 29 | 27 | 21 | 17 | 14 | 15 | 13 | 12 | 9 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| U.S. Resident | 99.1% | 99.3% | 99.5% | 99.6% | 99.7% | 99.7% | 99.8% | 99.8% | 99.9% |
| Unknown | 0.9% | 0.7% | 0.5% | 0.4% | 0.3% | 0.3% | 0.2% | 0.2% | 0.1% |