| Value | Category | Cases | |
|---|---|---|---|
| 0 | 12 |
0.6%
|
|
| 12 | 397 |
20.3%
|
|
| 15 | 166 |
8.5%
|
|
| 18 | 109 |
5.6%
|
|
| 21 | 1009 |
51.6%
|
|
| 3 | 3 |
0.2%
|
|
| 6 | 20 |
1%
|
|
| 9 | 239 |
12.2%
|