| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 645 |
26%
|
| 2 | This term | 491 |
19.8%
|
| 3 | Last term | 397 |
16%
|
| 4 | 2 terms ago | 98 |
4%
|
| 5 | 3 terms ago | 88 |
3.6%
|
| 6 | More than a year ago | 758 |
30.6%
|
| Sysmiss | 63 |