| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 34 |
0.4%
|
| 2 | 12 years old | 141 |
1.5%
|
| 3 | 13 years old | 1329 |
13.8%
|
| 4 | 14 years old | 3176 |
32.9%
|
| 5 | 15 years old | 2890 |
29.9%
|
| 6 | 16 years old or older | 2091 |
21.6%
|
| Sysmiss | 53 |