| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 27 |
0.7%
|
| 2 | 12 years old | 113 |
2.9%
|
| 3 | 13 years old | 390 |
9.9%
|
| 4 | 14 years old | 579 |
14.7%
|
| 5 | 15 years old | 704 |
17.9%
|
| 6 | 16 years old | 754 |
19.2%
|
| 7 | 17 years old | 689 |
17.5%
|
| 8 | 18 years old or older | 678 |
17.2%
|
| Sysmiss | 13 |