| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 11 |
0.3%
|
| 2 | 12 years old | 157 |
3.9%
|
| 3 | 13 years old | 802 |
19.9%
|
| 4 | 14 years old | 1017 |
25.2%
|
| 5 | 15 years old | 1185 |
29.4%
|
| 6 | 16 years old | 662 |
16.4%
|
| 7 | 17 years old or older | 200 |
5%
|
| Sysmiss | 4 |