| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 65 |
0.4%
|
| 2 | 12 years old | 1562 |
9.3%
|
| 3 | 13 years old | 3645 |
21.7%
|
| 4 | 14 years old | 5346 |
31.9%
|
| 5 | 15 years old | 3486 |
20.8%
|
| 6 | 16 years old | 2182 |
13%
|
| 7 | 17 years old or older | 478 |
2.9%
|
| Sysmiss | 74 |