| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 9 |
0.4%
|
| 2 | 12 years old | 349 |
14.3%
|
| 3 | 13 years old | 654 |
26.7%
|
| 4 | 14 years old | 724 |
29.6%
|
| 5 | 15 years old | 485 |
19.8%
|
| 6 | 16 years old | 195 |
8%
|
| 7 | 17 years old or older | 30 |
1.2%
|
| Sysmiss | 2 |