| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 12 months | 2586 |
52.8%
|
| 2 | 12-23 months | 1229 |
25.1%
|
| 3 | 2 years or more | 1084 |
22.1%
|
| 9 | 16 | ||
| Sysmiss | 3529 |