| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 Once or more per month | 1427 |
31.2%
|
| 2 | 2 Once every three months | 676 |
14.8%
|
| 3 | 3 Once every six months | 417 |
9.1%
|
| 4 | 4 At least once a year | 881 |
19.3%
|
| 5 | 5 Less than one time per year | 786 |
17.2%
|
| 6 | 6 (DK) | 232 |
5.1%
|
| 7 | 7 (Refused) | 156 |
3.4%
|
| Sysmiss | 1094708 |