| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 22 |
3.3%
|
| 2 | 12 years old | 49 |
7.3%
|
| 3 | 13 years old | 96 |
14.3%
|
| 4 | 14 years old | 119 |
17.8%
|
| 5 | 15 years old | 153 |
22.9%
|
| 6 | 16 years old | 143 |
21.4%
|
| 7 | 17 years old or older | 87 |
13%
|
| Sysmiss | 127 |