| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 12 months ago | 529 |
36.8%
|
| 2 | 12-23 months ago | 836 |
58.1%
|
| 3 | 2 or more years ago | 74 |
5.1%
|
| 9 | Missing | 0 |
0%
|
| Sysmiss | 9524 |