| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 3 |
0.1%
|
| 2 | 12 years old | 19 |
0.7%
|
| 3 | 13 years old | 347 |
12.1%
|
| 4 | 14 years old | 1445 |
50.2%
|
| 5 | 15 years old | 933 |
32.4%
|
| 6 | 16 years old | 118 |
4.1%
|
| 7 | 17 years old or older | 12 |
0.4%
|
| Sysmiss | 5 |