| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 year | 108 |
29.9%
|
| 2 | 1 to 2 years | 66 |
18.3%
|
| 3 | 3 to 4 years | 76 |
21.1%
|
| 4 | 5 to 9 years | 49 |
13.6%
|
| 5 | 10 years or more | 62 |
17.2%
|
| Sysmiss | 46828 |