| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 603 |
35%
|
| 2 | This term | 401 |
23.3%
|
| 3 | Last term | 482 |
28%
|
| 4 | 2 terms ago | 47 |
2.7%
|
| 5 | 3 terms ago | 103 |
6%
|
| 6 | More than a year ago | 87 |
5%
|
| Sysmiss | 17 |