| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than one month | 102 |
6.4%
|
| 2 | 1-3 months | 601 |
37.4%
|
| 3 | 4-6 months | 321 |
20%
|
| 4 | 7-12 months | 241 |
15%
|
| 5 | 13-18 months | 67 |
4.2%
|
| 6 | 19-24 months | 64 |
4%
|
| 7 | 25-36 months | 55 |
3.4%
|
| 8 | More than 3 years | 155 |
9.7%
|
| Sysmiss | 31325 |