| Recipient Residency | Year | |||||||||
| 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | |
| Total | 44,982 | 50,716 | 55,877 | 60,355 | 64,584 | 68,930 | 73,845 | 78,885 | 80,824 | 95,347 |
| U.S. Resident | 42,975 | 48,885 | 54,226 | 58,895 | 63,270 | 67,774 | 72,822 | 77,993 | 80,087 | 94,551 |
| Unknown | 2,007 | 1,831 | 1,651 | 1,460 | 1,314 | 1,156 | 1,023 | 892 | 737 | 796 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| U.S. Resident | 95.5% | 96.4% | 97.0% | 97.6% | 98.0% | 98.3% | 98.6% | 98.9% | 99.1% | 99.2% |
| Unknown | 4.5% | 3.6% | 3.0% | 2.4% | 2.0% | 1.7% | 1.4% | 1.1% | 0.9% | 0.8% |