| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 42 |
2.8%
|
| 2 | 12 years old | 115 |
7.6%
|
| 3 | 13 years old | 379 |
24.9%
|
| 4 | 14 years old | 489 |
32.1%
|
| 5 | 15 years old | 321 |
21.1%
|
| 6 | 16 years old | 149 |
9.8%
|
| 7 | 17 years old or older | 26 |
1.7%
|