| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 12 months ago | 354 |
2.3%
|
| 2 | 12-23 months ago | 585 |
3.7%
|
| 3 | 2 or more years ago | 181 |
1.2%
|
| 9 | Missing | 5 |
0%
|
| Sysmiss | 14482 |
92.8%
|