| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1-2 years | 56 |
33.5%
|
| 2 | 3-4 years | 53 |
31.7%
|
| 3 | 5-10 years | 31 |
18.6%
|
| 4 | 10+ years | 27 |
16.2%
|
| Sysmiss | 4253 |