| Blood Type | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 85 | 78 | 88 | 88 | 81 | 86 | 89 | 80 | 71 | 58 |
| A | 34 | 31 | 35 | 38 | 32 | 31 | 32 | 31 | 32 | 26 |
| AB | 5 | 3 | 4 | 3 | 1 | 1 | 1 | 1 | 1 | 1 |
| B | 5 | 4 | 3 | 6 | 9 | 7 | 10 | 5 | 4 | 1 |
| O | 41 | 40 | 46 | 41 | 39 | 47 | 46 | 43 | 34 | 30 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| A | 40.0% | 39.7% | 39.8% | 43.2% | 39.5% | 36.0% | 36.0% | 38.8% | 45.1% | 44.8% |
| AB | 5.9% | 3.8% | 4.5% | 3.4% | 1.2% | 1.2% | 1.1% | 1.3% | 1.4% | 1.7% |
| B | 5.9% | 5.1% | 3.4% | 6.8% | 11.1% | 8.1% | 11.2% | 6.3% | 5.6% | 1.7% |
| O | 48.2% | 51.3% | 52.3% | 46.6% | 48.1% | 54.7% | 51.7% | 53.8% | 47.9% | 51.7% |