| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 4 |
0.1%
|
| 2 | 12 years old | 28 |
0.6%
|
| 3 | 13 years old | 1040 |
22.1%
|
| 4 | 14 years old | 1602 |
34.1%
|
| 5 | 15 years old | 1725 |
36.7%
|
| 6 | 16 years old | 289 |
6.1%
|
| 7 | 17 years old or older | 13 |
0.3%
|
| Sysmiss | 16 |