| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 206 |
5.5%
|
| 2 | 12 years old | 461 |
12.2%
|
| 3 | 13 years old | 699 |
18.6%
|
| 4 | 14 years old | 705 |
18.7%
|
| 5 | 15 years old | 750 |
19.9%
|
| 6 | 16 years old | 478 |
12.7%
|
| 7 | 17 years old | 341 |
9.1%
|
| 8 | 18 years old or older | 125 |
3.3%
|