| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 5 |
0.3%
|
| 2 | 12 years old | 4 |
0.2%
|
| 3 | 13 years old | 164 |
8.8%
|
| 4 | 14 years old | 395 |
21.2%
|
| 5 | 15 years old | 465 |
24.9%
|
| 6 | 16 years old | 421 |
22.6%
|
| 7 | 17 years old | 288 |
15.4%
|
| 8 | 18 years old or older | 123 |
6.6%
|
| Sysmiss | 12 |