| Value | Category | Cases | |
|---|---|---|---|
| 0 | 2 |
0.4%
|
|
| 1 | 12 |
2.4%
|
|
| 2 | 18 |
3.6%
|
|
| 3 | 15 |
3%
|
|
| 4 | 10 |
2%
|
|
| 5 | 8 |
1.6%
|
|
| 6 | 3 |
0.6%
|
|
| 7 | 1 |
0.2%
|
|
| 10 | 3 |
0.6%
|
|
| 12 | 1 |
0.2%
|
|
| 15 | 1 |
0.2%
|
|
| Missing value | 432 |
85.4%
|