| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 year | 400 |
70.1%
|
| 2 | 1-2 years | 73 |
12.8%
|
| 3 | 3-5 years | 45 |
7.9%
|
| 4 | 6-10 years | 30 |
5.3%
|
| 5 | 11 years or more | 23 |
4%
|
| Sysmiss | 41010 |