| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 218486 |
43.9%
|
| 2 | A few times a year | 95143 |
19.1%
|
| 3 | About once a month | 65801 |
13.2%
|
| 4 | Several times a month | 68219 |
13.7%
|
| 5 | Several times a week | 50395 |
10.1%
|
| 7 | N/A | 4020 | |
| 8 | Invalid | 999 | |
| 9 | Miss | 12895 |