| Value | Category | Cases | |
|---|---|---|---|
| 1 | -99 | 4 |
0.1%
|
| 2 | 0 | 1495 |
33.6%
|
| 3 | 1 | 823 |
18.5%
|
| 4 | 2 | 1156 |
26%
|
| Missing value | 966 |
21.7%
|