| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 9 |
0.4%
|
| 2 | 12 years old | 221 |
8.8%
|
| 3 | 13 years old | 500 |
20%
|
| 4 | 14 years old | 579 |
23.1%
|
| 5 | 15 years old | 436 |
17.4%
|
| 6 | 16 years old | 306 |
12.2%
|
| 7 | 17 years old | 338 |
13.5%
|
| 8 | 18 years old or older | 114 |
4.6%
|
| Sysmiss | 5 |