| Age in years | Male | Female | Total | |||
| n | (%) | n | (%) | n | (%) | |
| Less than 40 | 0 | 0 | 1 | (4.8) | 1 | (1.4) |
| 40 - 49 | 3 | (6.3) | 3 | (14.3) | 6 | (8.7) |
| 50 - 59 | 4 | (8.3) | 3 | (14.3) | 7 | (10.1) |
| 60 - 69 | 12 | (25) | 7 | (33.3) | 19 | (27.5) |
| >70 | 29 | (60.4) | 7 | (33.3) | 36 | (52.2) |
| Total | 48 | (100) | 21 | (100) | 69 | (100) |