| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 354 |
55.8%
|
| 2 | This period | 111 |
17.5%
|
| 3 | Last period | 83 |
13.1%
|
| 4 | 2 periods ago | 21 |
3.3%
|
| 5 | 3 terms ago | 10 |
1.6%
|
| 6 | More than a year ago | 55 |
8.7%
|
| Sysmiss | 3 |