| Donor Gender | Year | |||||||||
| 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | |
| Total | 1,360 | 1,289 | 1,291 | 1,322 | 1,462 | 1,628 | 1,703 | 1,818 | 1,872 | 1,774 |
| Female | 473 | 463 | 452 | 472 | 523 | 578 | 638 | 625 | 628 | 575 |
| Male | 887 | 826 | 839 | 850 | 939 | 1,050 | 1,065 | 1,193 | 1,244 | 1,199 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 34.8% | 35.9% | 35.0% | 35.7% | 35.8% | 35.5% | 37.5% | 34.4% | 33.5% | 32.4% |
| Male | 65.2% | 64.1% | 65.0% | 64.3% | 64.2% | 64.5% | 62.5% | 65.6% | 66.5% | 67.6% |