| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 40 |
2.6%
|
| 2 | 12 years old | 205 |
13.6%
|
| 3 | 13 years old | 433 |
28.6%
|
| 4 | 14 years old | 406 |
26.9%
|
| 5 | 15 years old | 263 |
17.4%
|
| 6 | 16 years old | 124 |
8.2%
|
| 7 | 17 years old or older | 41 |
2.7%
|
| Sysmiss | 32 |