| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 55 |
5.7%
|
| 2 | 1 | 67 |
7%
|
| 3 | 2 | 163 |
16.9%
|
| 4 | 3 | 178 |
18.5%
|
| 5 | 4 | 109 |
11.3%
|
| 6 | 5 | 68 |
7.1%
|
| 7 | 6 | 15 |
1.6%
|
| 8 | 7 | 48 |
5%
|
| Missing value | 259 |
26.9%
|