| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 76 |
4.4%
|
| 2 | 12 years old | 191 |
11%
|
| 3 | 13 years old | 504 |
29%
|
| 4 | 14 years old | 622 |
35.8%
|
| 5 | 15 years old | 302 |
17.4%
|
| 6 | 16 years old | 41 |
2.4%
|
| 7 | 17 years old or older | 3 |
0.2%
|
| Sysmiss | 25 |