| Value | Category | Cases | |
|---|---|---|---|
| -2 | 1231 |
8.8%
|
|
| -1 | 3263 |
23.2%
|
|
| 0 | 5529 |
39.4%
|
|
| 1 | 2882 |
20.5%
|
|
| 2 | 938 |
6.7%
|
|
| Missing value | 198 |
1.4%
|