| Ethnicity | Year | |||||||||
| 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | |
| Total | 71 | 82 | 81 | 89 | 95 | 107 | 141 | 168 | 183 | 172 |
| Hispanic/Latino | 8 | 6 | 9 | 8 | 11 | 11 | 15 | 23 | 21 | 25 |
| Non-Hispanic/Non-Latino | 38 | 57 | 57 | 73 | 77 | 90 | 120 | 139 | 157 | 144 |
| Unknown | 25 | 19 | 15 | 8 | 7 | 6 | 6 | 6 | 5 | 3 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Hispanic/Latino | 11.3% | 7.3% | 11.1% | 9.0% | 11.6% | 10.3% | 10.6% | 13.7% | 11.5% | 14.5% |
| Non-Hispanic/Non-Latino | 53.5% | 69.5% | 70.4% | 82.0% | 81.1% | 84.1% | 85.1% | 82.7% | 85.8% | 83.7% |
| Unknown | 35.2% | 23.2% | 18.5% | 9.0% | 7.4% | 5.6% | 4.3% | 3.6% | 2.7% | 1.7% |