| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 27191 |
82%
|
| 2 | 1 to 3 times a year | 3990 |
12%
|
| 3 | 4 to 6 times a year | 1117 |
3.4%
|
| 4 | 7 to 9 times a year | 332 |
1%
|
| 5 | 10+ times a year | 518 |
1.6%
|
| 8 | don't remember | 27 |
0.1%
|
| Sysmiss | 2608 |