| Value | Category | Cases | |
|---|---|---|---|
| 0 | 22 |
9.5%
|
|
| 1 | 32 |
13.9%
|
|
| 2 | 17 |
7.4%
|
|
| 3 | 13 |
5.6%
|
|
| 4 | 2 |
0.9%
|
|
| 7 | 1 |
0.4%
|
|
| Missing value | 144 |
62.3%
|