| Blood Type | Year | |||||||||
| 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | |
| Total | 71 | 82 | 81 | 89 | 95 | 107 | 141 | 168 | 183 | 172 |
| O | 27 | 32 | 35 | 38 | 37 | 52 | 66 | 77 | 87 | 84 |
| A | 30 | 35 | 30 | 32 | 37 | 37 | 42 | 53 | 64 | 57 |
| B | 11 | 13 | 10 | 15 | 17 | 15 | 26 | 32 | 24 | 24 |
| AB | 3 | 2 | 6 | 4 | 4 | 3 | 7 | 6 | 8 | 7 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| O | 38.0% | 39.0% | 43.2% | 42.7% | 38.9% | 48.6% | 46.8% | 45.8% | 47.5% | 48.8% |
| A | 42.3% | 42.7% | 37.0% | 36.0% | 38.9% | 34.6% | 29.8% | 31.5% | 35.0% | 33.1% |
| B | 15.5% | 15.9% | 12.3% | 16.9% | 17.9% | 14.0% | 18.4% | 19.0% | 13.1% | 14.0% |
| AB | 4.2% | 2.4% | 7.4% | 4.5% | 4.2% | 2.8% | 5.0% | 3.6% | 4.4% | 4.1% |