| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 319 |
16.1%
|
| 2 | this year | 1199 |
60.6%
|
| 3 | last year | 310 |
15.7%
|
| 4 | 2 years ago | 76 |
3.8%
|
| 5 | 3 years ago | 31 |
1.6%
|
| 6 | More than 3 years ago | 43 |
2.2%
|
| Sysmiss | 23 |