| Value | Category | Cases | |
|---|---|---|---|
| 0 | 6 |
1%
|
|
| 12 | 40 |
6.8%
|
|
| 15 | 49 |
8.4%
|
|
| 18 | 19 |
3.3%
|
|
| 21 | 383 |
65.6%
|
|
| 3 | 79 |
13.5%
|
|
| 6 | 1 |
0.2%
|
|
| 9 | 7 |
1.2%
|