| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than a year | 625 |
34.9%
|
| 2 | 1 year to less than 3 years | 843 |
47%
|
| 3 | 3 years or more | 285 |
15.9%
|
| 9 | Unspecified | 39 |
2.2%
|
| Sysmiss | 55452 |