| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1015 |
19.4%
|
|
| 1 | 3742 |
71.5%
|
|
| 8 | 40 |
0.8%
|
|
| 9 | 6 |
0.1%
|
|
| Missing value | 428 |
8.2%
|