| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always - at home | 232154 |
9.9%
|
| 2 | Yes, always - other places | 146922 |
6.2%
|
| 3 | Yes, when necessary | 342178 |
14.6%
|
| 4 | No | 1629906 |
69.3%
|
| Sysmiss | 335008 |