| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 12 monts ago | 176 |
43.5%
|
| 2 | 12-23 months ago | 64 |
15.8%
|
| 3 | 2 or more years ago | 165 |
40.7%
|
| 9 | Missing | 0 |
0%
|
| Sysmiss | 1504 |