| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 589 |
28.4%
|
| 2 | This term | 382 |
18.4%
|
| 3 | Last term | 459 |
22.1%
|
| 4 | 2 terms ago | 186 |
9%
|
| 5 | 3 terms ago | 109 |
5.2%
|
| 6 | More than a year ago | 352 |
16.9%
|
| Sysmiss | 82 |