| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than a year | 782 |
34.1%
|
| 2 | 1 year to less than 3 years | 1119 |
48.8%
|
| 3 | 3 years or more | 361 |
15.7%
|
| 9 | Unspecified | 31 |
1.4%
|
| Sysmiss | 64586 |