| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 465 |
32.6%
|
| 2 | This term | 190 |
13.3%
|
| 3 | Last term | 206 |
14.4%
|
| 4 | 2 terms ago | 94 |
6.6%
|
| 5 | 3 terms ago | 72 |
5%
|
| 6 | More than a year ago | 400 |
28%
|
| Sysmiss | 1 |