| Value | Category | Cases | |
|---|---|---|---|
| 18 | 60 |
9.9%
|
|
| 19 | 238 |
39.3%
|
|
| 20 | 159 |
26.3%
|
|
| 21 | 104 |
17.2%
|
|
| 22 | 41 |
6.8%
|
|
| 23 | 3 |
0.5%
|