| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 year ago | 2 |
3.1%
|
| 2 | Between 1 and 2 years ago | 25 |
38.5%
|
| 20 | More than 2 years ago | 38 |
58.5%
|
| Sysmiss | 3092 |