| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 33 |
0.1%
|
| 2 | 12 years old | 178 |
0.7%
|
| 3 | 13 years old | 5184 |
20.3%
|
| 4 | 14 years old | 5357 |
21%
|
| 5 | 15 years old | 5554 |
21.8%
|
| 6 | 16 years old | 4562 |
17.9%
|
| 7 | 17 years old | 4410 |
17.3%
|
| 8 | 18 years old or older | 215 |
0.8%
|
| Sysmiss | 14 |