| Value | Category | Cases | |
|---|---|---|---|
| 0 | 9 |
3.3%
|
|
| 1 | 147 |
54%
|
|
| 2 | 78 |
28.7%
|
|
| 3 | 20 |
7.4%
|
|
| 4 | 7 |
2.6%
|
|
| 5 | 9 |
3.3%
|
|
| 6 | 2 |
0.7%
|
|
| Missing value | 2 |