| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 264 |
17.7%
|
| 2 | this year | 809 |
54.2%
|
| 3 | last year | 277 |
18.6%
|
| 4 | 2 years ago | 68 |
4.6%
|
| 5 | 3 years ago | 35 |
2.3%
|
| 6 | More than 3 years ago | 40 |
2.7%
|
| Sysmiss | 53 |