| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than a year | 185 |
43%
|
| 2 | 1 year to less than 3 years | 199 |
46.3%
|
| 3 | 3 years or more | 43 |
10%
|
| 9 | Unspecified | 3 |
0.7%
|
| Sysmiss | 9569 |