| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 880 |
46.2%
|
| 2 | 1-3 months | 622 |
32.7%
|
| 3 | 4-6 months | 252 |
13.2%
|
| 4 | 7-12 months | 80 |
4.2%
|
| 5 | More than 12 months | 71 |
3.7%
|
| Sysmiss | 49846 |