| Blood Type | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | |
| Total | 215 | 230 | 254 | 326 | 343 | 447 | 662 | 901 | 882 | 892 |
| A | 75 | 75 | 85 | 126 | 119 | 144 | 200 | 277 | 288 | 305 |
| AB | 8 | 9 | 8 | 12 | 8 | 13 | 21 | 26 | 27 | 23 |
| B | 31 | 37 | 36 | 42 | 52 | 65 | 92 | 123 | 113 | 103 |
| O | 101 | 109 | 125 | 146 | 164 | 225 | 349 | 475 | 454 | 461 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| A | 34.9% | 32.6% | 33.5% | 38.7% | 34.7% | 32.2% | 30.2% | 30.7% | 32.7% | 34.2% |
| AB | 3.7% | 3.9% | 3.1% | 3.7% | 2.3% | 2.9% | 3.2% | 2.9% | 3.1% | 2.6% |
| B | 14.4% | 16.1% | 14.2% | 12.9% | 15.2% | 14.5% | 13.9% | 13.7% | 12.8% | 11.5% |
| O | 47.0% | 47.4% | 49.2% | 44.8% | 47.8% | 50.3% | 52.7% | 52.7% | 51.5% | 51.7% |