| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 3 |
0.1%
|
| 2 | 12 years | 48 |
1.1%
|
| 3 | 13 years old | 783 |
18.3%
|
| 4 | 14 years old | 1439 |
33.7%
|
| 5 | 15 years old | 1246 |
29.2%
|
| 6 | 16 years old | 724 |
17%
|
| 7 | 17 years old or older | 25 |
0.6%
|
| Sysmiss | 5 |