| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 857 |
30.3%
|
| 2 | This term | 810 |
28.7%
|
| 3 | Last term | 346 |
12.2%
|
| 4 | 2 terms ago | 198 |
7%
|
| 5 | 3 terms ago | 120 |
4.2%
|
| 6 | More than a year ago | 496 |
17.5%
|
| Sysmiss | 51 |