| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than a year | 540 |
35.9%
|
| 2 | 1 year to less than 3 years | 715 |
47.5%
|
| 3 | 3 years or more | 251 |
16.7%
|
| Sysmiss | 48302 |