| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 52 |
2.9%
|
| 2 | 1 to 2 months | 94 |
5.2%
|
| 3 | 3 to 6 months | 147 |
8.1%
|
| 4 | 7 to 11 months | 204 |
11.3%
|
| 5 | 1-2 years | 438 |
24.3%
|
| 6 | 3 or more years | 871 |
48.2%
|
| Sysmiss | 42608 |