| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 year ago | 13 |
3.3%
|
| 2 | Between 1 and 2 years ago | 87 |
22.3%
|
| 20 | More than 2 years ago | 291 |
74.4%
|
| Sysmiss | 1880 |