| Age range (years) | Men n (%) | Women n (%) | Total n (%) |
| 41 - 50 | 0 (0) | 5 (100) | 5 (7.3) |
| 51 - 60 | 0 (0) | 13 (100) | 13 (19.1) |
| 61 - 70 | 11 (28.9) | 27 (71.1)** | 38 (55.9)* |
| 71 - 80 | 5 (41.7) | 7 (58.3) | 12 (17.7) |
| Total | 16 (23.5) | 52 (76.5)** | 68 (100) |