| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1-2 years | 46 |
38.7%
|
| 2 | 3-4 years | 30 |
25.2%
|
| 3 | 5-10 years | 15 |
12.6%
|
| 4 | 10 + years | 28 |
23.5%
|
| Sysmiss | 5869 |