| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 6 months | 43 |
11.2%
|
| 2 | 7 to less than 12 months | 36 |
9.4%
|
| 3 | 1 to 5 years | 180 |
46.8%
|
| 4 | More than 5 years | 126 |
32.7%
|
| Sysmiss | 3516 |