| Recipient Residency | Year | |||||||||
| 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | |
| Total | 12,237 | 14,451 | 16,576 | 18,665 | 20,985 | 23,307 | 25,648 | 27,851 | 28,985 | 33,854 |
| U.S. Resident | 11,816 | 14,045 | 16,176 | 18,288 | 20,612 | 22,955 | 25,332 | 27,559 | 28,735 | 33,592 |
| Unknown | 421 | 406 | 400 | 377 | 373 | 352 | 316 | 292 | 250 | 262 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| U.S. Resident | 96.6% | 97.2% | 97.6% | 98.0% | 98.2% | 98.5% | 98.8% | 99.0% | 99.1% | 99.2% |
| Unknown | 3.4% | 2.8% | 2.4% | 2.0% | 1.8% | 1.5% | 1.2% | 1.0% | 0.9% | 0.8% |