| Blood Type | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 30 | 31 | 32 | 40 | 40 | 52 | 52 | 50 | 52 | 66 |
| A | 11 | 12 | 12 | 15 | 17 | 16 | 20 | 17 | 16 | 26 |
| AB | 2 | 2 | 2 | 2 | 3 | 2 | 3 | 1 | 3 | 1 |
| B | 5 | 7 | 4 | 7 | 5 | 6 | 6 | 8 | 6 | 10 |
| O | 12 | 10 | 14 | 16 | 15 | 28 | 23 | 24 | 27 | 29 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| A | 36.7% | 38.7% | 37.5% | 37.5% | 42.5% | 30.8% | 38.5% | 34.0% | 30.8% | 39.4% |
| AB | 6.7% | 6.5% | 6.3% | 5.0% | 7.5% | 3.8% | 5.8% | 2.0% | 5.8% | 1.5% |
| B | 16.7% | 22.6% | 12.5% | 17.5% | 12.5% | 11.5% | 11.5% | 16.0% | 11.5% | 15.2% |
| O | 40.0% | 32.3% | 43.8% | 40.0% | 37.5% | 53.8% | 44.2% | 48.0% | 51.9% | 43.9% |