| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 61 |
3.5%
|
| 2 | 1 to 2 months | 112 |
6.5%
|
| 3 | 3 to 6 months | 157 |
9.1%
|
| 4 | 7 to 11 months | 179 |
10.4%
|
| 5 | 1-2 years | 402 |
23.4%
|
| 6 | 3 or more years | 808 |
47%
|
| Sysmiss | 41945 |