| Cancers | 1989-1990 | 1997-1998 |
| Lung Ca. | 25 | 129 |
| Lymphoma | 14 | 52 |
| Leukemia | 9 | 45 |
| Larynx Ca. | 17 | 71 |
| Breast Ca. | 17 | 106 |
| Stomach Ca. | 4 | 12 |
| Bone Ca. | 2 | 10 |
| Rectum Ca. | 3 | 14 |