| Blood Type | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 136 | 123 | 119 | 107 | 106 | 83 | 45 | 53 | 34 | 33 |
| A | 42 | 36 | 40 | 30 | 29 | 26 | 15 | 20 | 11 | 9 |
| AB | 5 | 7 | 3 | 3 | 3 | 3 | 1 | - | - | 1 |
| B | 12 | 11 | 12 | 14 | 14 | 9 | 3 | 5 | 2 | 3 |
| O | 77 | 69 | 64 | 60 | 60 | 45 | 26 | 28 | 21 | 20 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| A | 30.9% | 29.3% | 33.6% | 28.0% | 27.4% | 31.3% | 33.3% | 37.7% | 32.4% | 27.3% |
| AB | 3.7% | 5.7% | 2.5% | 2.8% | 2.8% | 3.6% | 2.2% | - | - | 3.0% |
| B | 8.8% | 8.9% | 10.1% | 13.1% | 13.2% | 10.8% | 6.7% | 9.4% | 5.9% | 9.1% |
| O | 56.6% | 56.1% | 53.8% | 56.1% | 56.6% | 54.2% | 57.8% | 52.8% | 61.8% | 60.6% |