| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1-12 months ago | 3 |
15%
|
| 2 | 2 years ago | 0 |
0%
|
| 3 | 3 years ago | 15 |
75%
|
| 4 | 4 years ago | 0 |
0%
|
| 5 | 5 years ago or more | 2 |
10%
|
| 9 | Do not know, do not remember | 0 |
0%
|
| Sysmiss | 2816 |