| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 2719 |
97.5%
|
| 2 | During last 3 months | 16 |
0.6%
|
| 3 | During last 6 months | 10 |
0.4%
|
| 4 | During last year | 19 |
0.7%
|
| 5 | More than one year ago | 25 |
0.9%
|
| Sysmiss | 10 |