| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all | 72 |
8.4%
|
| 2 | Up to 10 | 199 |
23.2%
|
| 3 | Up to 20 | 299 |
34.8%
|
| 4 | Up to 100 or higher | 288 |
33.6%
|
| Sysmiss | 142 |