| Value | Category | Cases | |
|---|---|---|---|
| 0 | 13 |
2.4%
|
|
| 12 | 110 |
20.5%
|
|
| 15 | 116 |
21.6%
|
|
| 18 | 110 |
20.5%
|
|
| 21 | 96 |
17.9%
|
|
| 3 | 3 |
0.6%
|
|
| 6 | 38 |
7.1%
|
|
| 9 | 51 |
9.5%
|