| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 2699 |
32.7%
|
| 2 | This term | 2033 |
24.6%
|
| 3 | Last term | 1625 |
19.7%
|
| 4 | Two years ago | 560 |
6.8%
|
| 5 | More than year ago | 1339 |
16.2%
|
| Sysmiss | 118 |