| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 11 |
0.8%
|
| 2 | 12 years old | 231 |
17.7%
|
| 3 | 13 years old | 483 |
37%
|
| 4 | 14 years old | 384 |
29.4%
|
| 5 | 15 years old | 166 |
12.7%
|
| 6 | 16 years old | 29 |
2.2%
|
| 7 | 17 years old or older | 3 |
0.2%
|
| Sysmiss | 2 |