| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 2 years ago | 18 |
46.2%
|
| 2 | 2 years to less than 5 years ago | 9 |
23.1%
|
| 3 | 5 years or more ago | 12 |
30.8%
|
| Sysmiss | 4505 |