| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 317 |
17.6%
|
| 2 | this year | 1008 |
56.1%
|
| 3 | last year | 311 |
17.3%
|
| 4 | 2 years ago | 84 |
4.7%
|
| 5 | 3 years ago | 36 |
2%
|
| 6 | More than 3 years ago | 41 |
2.3%
|
| Sysmiss | 29 |