| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 9 |
0.2%
|
| 2 | 12 years | 19 |
0.5%
|
| 3 | 13 years old | 874 |
21.8%
|
| 4 | 14 years old | 1172 |
29.2%
|
| 5 | 15 years old | 1646 |
41%
|
| 6 | 16 years old | 277 |
6.9%
|
| 7 | 17 years old or older | 19 |
0.5%
|
| Sysmiss | 11 |