| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 13 |
1.8%
|
| 2 | 12 years old | 67 |
9.1%
|
| 3 | 13 years old | 212 |
28.8%
|
| 4 | 14 years old | 210 |
28.5%
|
| 5 | 15 years old | 182 |
24.7%
|
| 6 | 16 years old | 43 |
5.8%
|
| 7 | 17 years old or older | 9 |
1.2%
|