| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 year ago | 2 |
14.3%
|
| 2 | Between 1 and 2 years ago | 1 |
7.1%
|
| 20 | More than 2 years ago | 11 |
78.6%
|
| Sysmiss | 3143 |