| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 20 |
8.1%
|
| 2 | 1 | 2 |
0.8%
|
| 3 | 2 | 3 |
1.2%
|
| 4 | 4 | 2 |
0.8%
|
| 5 | 7 | 9 |
3.7%
|
| Missing value | 210 |
85.4%
|