| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 year | 88 |
12.8%
|
| 2 | 2 years | 60 |
8.7%
|
| 3 | 3 years | 49 |
7.1%
|
| 4 | 4 years | 32 |
4.7%
|
| 5 | 5 years | 45 |
6.6%
|
| 6 | 6-10 years | 128 |
18.7%
|
| 7 | 11-20 years | 115 |
16.8%
|
| 8 | 20+ years | 169 |
24.6%
|
| Sysmiss | 367 |