| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 672 |
19.7%
|
| 2 | This term | 637 |
18.6%
|
| 3 | Last term | 793 |
23.2%
|
| 4 | 2 terms ago | 431 |
12.6%
|
| 5 | 3 terms ago | 257 |
7.5%
|
| 6 | More than a year ago | 629 |
18.4%
|
| Sysmiss | 31 |