| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 130 |
1.9%
|
| 2 | 12 years old | 700 |
10.1%
|
| 3 | 13 years old | 1928 |
27.7%
|
| 4 | 14 years old | 2140 |
30.7%
|
| 5 | 15 years old | 1542 |
22.1%
|
| 6 | 16 years old | 417 |
6%
|
| 7 | 17 years old or older | 105 |
1.5%
|
| Sysmiss | 21 |