| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1140 |
28.4%
|
| 2 | This term | 938 |
23.4%
|
| 3 | Last term | 725 |
18%
|
| 4 | 2 terms ago | 289 |
7.2%
|
| 5 | 3 terms ago | 201 |
5%
|
| 6 | More than a year ago | 724 |
18%
|
| Sysmiss | 84 |