| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 12months ago | 2223 |
53.5%
|
| 2 | 12-23months ago | 904 |
21.7%
|
| 3 | 2 or more years ago | 1032 |
24.8%
|
| Sysmiss | 15681 |