| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 289 |
16.5%
|
| 2 | this year | 1100 |
62.7%
|
| 3 | last year | 234 |
13.3%
|
| 4 | 2 years ago | 65 |
3.7%
|
| 5 | 3 years ago | 35 |
2%
|
| 6 | More than 3 years ago | 31 |
1.8%
|
| Sysmiss | 31 |