| Value | Category | Cases | |
|---|---|---|---|
| 1 | up to 6 months | 52 |
1.5%
|
| 2 | 7-12 months | 39 |
1.1%
|
| 3 | 1-3 years | 286 |
8%
|
| 4 | more than 3 years | 3182 |
89.4%
|
| Sysmiss | 19122 |