| Value | Category | Cases | |
|---|---|---|---|
| 0 | 54 |
23.7%
|
|
| 1 | 130 |
57%
|
|
| 2 | 32 |
14%
|
|
| 3 | 9 |
3.9%
|
|
| 4 | 2 |
0.9%
|
|
| 9 | 1 |
0.4%
|
|
| Missing value | 8 |