| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 621 |
28.7%
|
| 2 | This term | 575 |
26.6%
|
| 3 | Last term | 487 |
22.5%
|
| 4 | 2 terms ago | 108 |
5%
|
| 5 | 3 terms ago | 87 |
4%
|
| 6 | More than a year ago | 285 |
13.2%
|
| Sysmiss | 44 |