| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 1 |
0.1%
|
| 2 | 12 years old | 2 |
0.1%
|
| 3 | 13 years old | 301 |
21.4%
|
| 4 | 14 years old | 539 |
38.3%
|
| 5 | 15 years old | 414 |
29.4%
|
| 6 | 16 years old | 143 |
10.2%
|
| 7 | 17 years old or older | 8 |
0.6%
|
| Sysmiss | 9 |