| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 477 |
33.3%
|
| 2 | This term | 136 |
9.5%
|
| 3 | Last term | 171 |
11.9%
|
| 4 | 2 terms ago | 161 |
11.3%
|
| 5 | 3 terms ago | 108 |
7.5%
|
| 6 | More than a year ago | 378 |
26.4%
|
| Sysmiss | 29 |