| Value | Category | Cases | |
|---|---|---|---|
| 1 | less than 12 months | 1621 |
19.3%
|
| 2 | 12-23 months | 1557 |
18.6%
|
| 3 | 2 years or more | 5206 |
62.1%
|
| Sysmiss | 4531 |