| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 15 |
0.3%
|
| 2 | 12 years old | 61 |
1.2%
|
| 3 | 13 years old | 890 |
17.2%
|
| 4 | 14 years old | 2148 |
41.4%
|
| 5 | 15 years old | 1899 |
36.6%
|
| 6 | 16 years old or older | 172 |
3.3%
|
| Sysmiss | 7 |