| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 52 |
1.2%
|
| 2 | 12 years old | 157 |
3.5%
|
| 3 | 13 years old | 1043 |
23.5%
|
| 4 | 14 years old | 1222 |
27.5%
|
| 5 | 15 years old | 940 |
21.1%
|
| 6 | 16 years old | 817 |
18.4%
|
| 7 | 17 years old or older | 215 |
4.8%
|
| Sysmiss | 38 |