| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 406 |
19.8%
|
| 2 | this year | 1172 |
57.1%
|
| 3 | last year | 334 |
16.3%
|
| 4 | 2 years ago | 73 |
3.6%
|
| 5 | 3 years ago | 29 |
1.4%
|
| 6 | More than 3 years ago | 37 |
1.8%
|
| Sysmiss | 41 |