| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 5 |
0.2%
|
| 2 | 12 years old | 121 |
4.5%
|
| 3 | 13 years old | 522 |
19.3%
|
| 4 | 14 years old | 439 |
16.2%
|
| 5 | 15 years old | 489 |
18%
|
| 6 | 16 years old | 454 |
16.7%
|
| 7 | 17 years old | 411 |
15.2%
|
| 8 | 18 years old or older | 270 |
10%
|
| Sysmiss | 4 |