| Value | Category | Cases | |
|---|---|---|---|
| 15 | 8 |
0.3%
|
|
| 16 | 44 |
1.4%
|
|
| 17 | 210 |
6.6%
|
|
| 18 | 375 |
11.8%
|
|
| 19 | 450 |
14.2%
|
|
| 20 | 552 |
17.4%
|
|
| 21 | 377 |
11.9%
|
|
| 22 | 314 |
9.9%
|
|
| 23 | 218 |
6.9%
|
|
| 24 | 170 |
5.3%
|
|
| 25 | 91 |
2.9%
|
|
| 26 | 41 |
1.3%
|
|
| 27 | 24 |
0.8%
|
|
| 28 | 6 |
0.2%
|
|
| 29 | 3 |
0.1%
|
|
| 30 | 2 |
0.1%
|
|
| 88 | Don't know | 0 |
0%
|
| 99 | Missing | 293 |
9.2%
|