| Value | Category | Cases | |
|---|---|---|---|
| 1 | 10 |
2.8%
|
|
| 2 | 11 |
3.1%
|
|
| 3 | 5 |
1.4%
|
|
| 4 | 5 |
1.4%
|
|
| 6 | 2 |
0.6%
|
|
| 8 | 1 |
0.3%
|
|
| 14 | 1 |
0.3%
|
|
| 20 | 1 |
0.3%
|
|
| Missing value | 324 |
90%
|