| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1-2 years | 33 |
36.3%
|
| 2 | 3-4 years | 22 |
24.2%
|
| 3 | 5-10 years | 17 |
18.7%
|
| 4 | 10 + years | 19 |
20.9%
|
| Sysmiss | 3508 |