| Value | Category | Cases | |
|---|---|---|---|
| 0 | 8 |
9.1%
|
|
| 1 | 57 |
64.8%
|
|
| 2 | 20 |
22.7%
|
|
| 3 | 2 |
2.3%
|
|
| 4 | 1 |
1.1%
|
|
| Missing value | 20 |