| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 22 |
0.5%
|
| 2 | 12 years old | 167 |
3.9%
|
| 3 | 13 years old | 917 |
21.2%
|
| 4 | 14 years old | 1278 |
29.6%
|
| 5 | 15 years old | 1249 |
28.9%
|
| 6 | 16 years old | 486 |
11.3%
|
| 7 | 17 years old | 145 |
3.4%
|
| 8 | 18 years old or older | 55 |
1.3%
|
| Sysmiss | 55 |