| Blood Type | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 2,477 | 2,420 | 2,255 | 2,054 | 1,808 | 1,588 | 1,329 | 1,323 | 1,406 | 1,684 |
| A | 821 | 754 | 701 | 636 | 545 | 439 | 355 | 346 | 415 | 494 |
| AB | 32 | 49 | 23 | 26 | 23 | 21 | 20 | 26 | 14 | 19 |
| B | 213 | 206 | 195 | 175 | 162 | 132 | 107 | 114 | 123 | 169 |
| O | 1,411 | 1,411 | 1,336 | 1,217 | 1,078 | 996 | 847 | 837 | 854 | 1,002 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| A | 33.1% | 31.2% | 31.1% | 31.0% | 30.1% | 27.6% | 26.7% | 26.2% | 29.5% | 29.3% |
| AB | 1.3% | 2.0% | 1.0% | 1.3% | 1.3% | 1.3% | 1.5% | 2.0% | 1.0% | 1.1% |
| B | 8.6% | 8.5% | 8.6% | 8.5% | 9.0% | 8.3% | 8.1% | 8.6% | 8.7% | 10.0% |
| O | 57.0% | 58.3% | 59.2% | 59.3% | 59.6% | 62.7% | 63.7% | 63.3% | 60.7% | 59.5% |