| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 980 |
43%
|
| 2 | In this term | 473 |
20.8%
|
| 3 | In the last term | 507 |
22.3%
|
| 4 | More than one year | 317 |
13.9%
|
| Sysmiss | 23 |