| Blood Type | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 1,818 | 2,107 | 2,041 | 2,062 | 1,907 | 1,700 | 1,529 | 1,443 | 1,349 | 1,235 |
| A | 593 | 672 | 584 | 575 | 581 | 530 | 454 | 439 | 408 | 370 |
| AB | 41 | 46 | 39 | 48 | 37 | 33 | 39 | 33 | 22 | 32 |
| B | 251 | 274 | 303 | 300 | 263 | 232 | 192 | 192 | 186 | 170 |
| O | 933 | 1,115 | 1,115 | 1,139 | 1,026 | 905 | 844 | 779 | 733 | 663 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| A | 32.6% | 31.9% | 28.6% | 27.9% | 30.5% | 31.2% | 29.7% | 30.4% | 30.2% | 30.0% |
| AB | 2.3% | 2.2% | 1.9% | 2.3% | 1.9% | 1.9% | 2.6% | 2.3% | 1.6% | 2.6% |
| B | 13.8% | 13.0% | 14.8% | 14.5% | 13.8% | 13.6% | 12.6% | 13.3% | 13.8% | 13.8% |
| O | 51.3% | 52.9% | 54.6% | 55.2% | 53.8% | 53.2% | 55.2% | 54.0% | 54.3% | 53.7% |