| Blood Type | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 1,433 | 1,507 | 1,609 | 1,648 | 1,623 | 1,576 | 1,569 | 1,435 | 1,231 | 1,027 |
| A | 494 | 516 | 528 | 554 | 548 | 540 | 517 | 450 | 400 | 350 |
| AB | 40 | 39 | 45 | 39 | 32 | 32 | 32 | 37 | 29 | 14 |
| B | 175 | 171 | 188 | 188 | 175 | 183 | 171 | 163 | 133 | 101 |
| O | 724 | 781 | 848 | 867 | 868 | 821 | 849 | 785 | 669 | 562 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| A | 34.5% | 34.2% | 32.8% | 33.6% | 33.8% | 34.3% | 33.0% | 31.4% | 32.5% | 34.1% |
| AB | 2.8% | 2.6% | 2.8% | 2.4% | 2.0% | 2.0% | 2.0% | 2.6% | 2.4% | 1.4% |
| B | 12.2% | 11.3% | 11.7% | 11.4% | 10.8% | 11.6% | 10.9% | 11.4% | 10.8% | 9.8% |
| O | 50.5% | 51.8% | 52.7% | 52.6% | 53.5% | 52.1% | 54.1% | 54.7% | 54.3% | 54.7% |