| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 192 |
17.1%
|
| 2 | 1-2 months | 265 |
23.7%
|
| 3 | 3-5 months | 225 |
20.1%
|
| 4 | 6-11 months | 134 |
12%
|
| 5 | 1-2 years | 170 |
15.2%
|
| 6 | 3 years or more | 134 |
12%
|
| Sysmiss | 51079 |