| Length of service | Response | % Response |
| 0 - 2 years | 11 | 9 |
| 3 - 5 years | 32 | 25 |
| 6 - 8 years | 26 | 21 |
| 9 - 11 years | 23 | 18 |
| 11 - 13 years | 20 | 16 |
| Above 13 years | 14 | 11 |
| Total | 126 | 100 |