| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 6 months | 8 |
4.9%
|
| 2 | Between 6 months and 2 years | 37 |
22.6%
|
| 3 | Between 2 and 5 years | 55 |
33.5%
|
| 4 | More than 5 years | 64 |
39%
|
| 9 | Missing | 0 |
0%
|