| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 13 |
0.3%
|
| 2 | 12 years old | 215 |
5.4%
|
| 3 | 13 years old | 1254 |
31.5%
|
| 4 | 14 years old | 1256 |
31.6%
|
| 5 | 15 years old | 1063 |
26.7%
|
| 6 | 16 years old | 133 |
3.3%
|
| 7 | 17 years old or older | 41 |
1%
|
| Sysmiss | 10 |