| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 105 |
2.3%
|
| 2 | 12 years old | 175 |
3.8%
|
| 3 | 13 years old | 838 |
18.2%
|
| 4 | 14 years old | 1258 |
27.3%
|
| 5 | 15 years old | 1347 |
29.2%
|
| 6 | 16 years old | 680 |
14.7%
|
| 7 | 17 years old or older | 210 |
4.6%
|
| Sysmiss | 26 |