| Age group (years) | Number | % |
| 20 - 24 | 2 | 1.9 |
| 25 - 30 | 5 | 4.9 |
| 31 - 35 | 5 | 4.9 |
| 36 - 40 | 9 | 8.9 |
| 41 - 45 | 28 | 27.5 |
| 46 - 50 | 30 | 29.5 |
| ≥51 | 23 | 22.5 |