| Blood Type | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | |
| Total | 778 | 874 | 1,029 | 1,254 | 1,421 | 1,482 | 1,654 | 2,059 | 1,791 | 1,212 |
| A | 301 | 333 | 378 | 479 | 551 | 591 | 656 | 802 | 707 | 463 |
| AB | 34 | 39 | 51 | 59 | 69 | 71 | 72 | 82 | 83 | 49 |
| B | 83 | 101 | 121 | 150 | 156 | 157 | 191 | 211 | 191 | 143 |
| O | 360 | 401 | 479 | 566 | 645 | 663 | 735 | 964 | 810 | 557 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| A | 38.7% | 38.1% | 36.7% | 38.2% | 38.8% | 39.9% | 39.7% | 39.0% | 39.5% | 38.2% |
| AB | 4.4% | 4.5% | 5.0% | 4.7% | 4.9% | 4.8% | 4.4% | 4.0% | 4.6% | 4.0% |
| B | 10.7% | 11.6% | 11.8% | 12.0% | 11.0% | 10.6% | 11.5% | 10.2% | 10.7% | 11.8% |
| O | 46.3% | 45.9% | 46.6% | 45.1% | 45.4% | 44.7% | 44.4% | 46.8% | 45.2% | 46.0% |