| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 13 |
0.8%
|
| 2 | 12 years old | 2 |
0.1%
|
| 3 | 13 years old | 189 |
11.7%
|
| 4 | 14 years old | 459 |
28.5%
|
| 5 | 15 years old | 374 |
23.2%
|
| 6 | 16 years old | 319 |
19.8%
|
| 7 | 17 years old | 179 |
11.1%
|
| 8 | 18 years or older | 75 |
4.7%
|
| Sysmiss | 5 |