| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 2062 |
34%
|
| 2 | During this month | 1016 |
16.7%
|
| 3 | During the last month | 840 |
13.8%
|
| 4 | During this term | 754 |
12.4%
|
| 5 | During the last term | 816 |
13.4%
|
| 6 | more than a year ago | 582 |
9.6%
|
| Sysmiss | 243 |