| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 6 months | 554 |
29.6%
|
| 2 | 6 – 11 months | 144 |
7.7%
|
| 3 | 1 – 2 years | 223 |
11.9%
|
| 4 | 3 years and more | 948 |
50.7%
|
| 7 | 1 |
0.1%
|
|
| Sysmiss | 92 |