| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 17 |
0.5%
|
| 2 | 12 years old | 16 |
0.5%
|
| 3 | 13 years old | 169 |
4.9%
|
| 4 | 14 years old | 828 |
23.8%
|
| 5 | 15 years old | 768 |
22.1%
|
| 6 | 16 years old | 714 |
20.5%
|
| 7 | 17 years old | 560 |
16.1%
|
| 8 | 18 years old or older | 407 |
11.7%
|
| Sysmiss | 14 |