| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1-12 months ago | 50 |
40.3%
|
| 2 | 2 years ago | 33 |
26.6%
|
| 3 | 3 years ago | 18 |
14.5%
|
| 4 | 4 years ago | 6 |
4.8%
|
| 5 | 5 years ago or more | 13 |
10.5%
|
| 9 | Do not know, do not remember | 4 |
3.2%
|
| Sysmiss | 2712 |