| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 6 months | 50 |
11.5%
|
| 2 | 7 to less than 12 months | 41 |
9.4%
|
| 3 | 1 to 5 years | 237 |
54.5%
|
| 4 | More than 5 years | 107 |
24.6%
|
| Sysmiss | 1469 |