| Value | Category | Cases | |
|---|---|---|---|
| -666 | Other | 5 |
2.4%
|
| 2 | 1-2 times per term | 28 |
13.4%
|
| 3 | 1-2 times per month | 39 |
18.7%
|
| 4 | Weekly or more often | 137 |
65.6%
|