| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every day | 33 |
0.6%
|
| 2 | More than once a week | 52 |
0.9%
|
| 3 | About once a week | 68 |
1.2%
|
| 4 | About once a month | 81 |
1.4%
|
| 5 | A few times a year | 126 |
2.2%
|
| 6 | Never | 5464 |
93.8%
|
| Sysmiss | 4036 |