| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 54 |
2.5%
|
| 2 | 12 years old | 395 |
18.4%
|
| 3 | 13 years old | 603 |
28.1%
|
| 4 | 14 years old | 737 |
34.4%
|
| 5 | 15 years old | 323 |
15.1%
|
| 6 | 16 years old | 23 |
1.1%
|
| 7 | 17 years old or older | 8 |
0.4%
|
| Sysmiss | 32 |