| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than one year ago | 5038 |
54%
|
| 2 | More than one but less than two years ago | 2829 |
30.3%
|
| 3 | More than two but less than three years ago | 1464 |
15.7%
|
| Sysmiss | 6994 |