| Blood Type | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | |
| Total | 1,785 | 1,879 | 2,177 | 3,005 | 3,663 | 4,270 | 4,201 | 4,152 | 4,141 | 4,225 |
| A | 634 | 651 | 781 | 1,078 | 1,320 | 1,529 | 1,505 | 1,477 | 1,463 | 1,512 |
| AB | 88 | 93 | 100 | 140 | 119 | 160 | 152 | 148 | 157 | 149 |
| B | 216 | 225 | 252 | 364 | 438 | 529 | 546 | 538 | 541 | 562 |
| O | 847 | 910 | 1,044 | 1,423 | 1,786 | 2,052 | 1,998 | 1,989 | 1,980 | 2,002 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| A | 35.5% | 34.6% | 35.9% | 35.9% | 36.0% | 35.8% | 35.8% | 35.6% | 35.3% | 35.8% |
| AB | 4.9% | 4.9% | 4.6% | 4.7% | 3.2% | 3.7% | 3.6% | 3.6% | 3.8% | 3.5% |
| B | 12.1% | 12.0% | 11.6% | 12.1% | 12.0% | 12.4% | 13.0% | 13.0% | 13.1% | 13.3% |
| O | 47.5% | 48.4% | 48.0% | 47.4% | 48.8% | 48.1% | 47.6% | 47.9% | 47.8% | 47.4% |