| Value | Category | Cases | |
|---|---|---|---|
| 7 | 7 | 3 |
0.3%
|
| 8 | 8 | 4 |
0.4%
|
| 9 | 9 | 4 |
0.4%
|
| 10 | 10 | 18 |
1.9%
|
| 11 | 11 | 23 |
2.4%
|
| 12 | 12 | 110 |
11.6%
|
| 13 | 13 | 22 |
2.3%
|
| 14 | 14 | 28 |
2.9%
|
| 15 | 15 | 54 |
5.7%
|
| 16 | 16 | 22 |
2.3%
|
| 17 | 17 | 75 |
7.9%
|
| 18 | 18 | 224 |
23.6%
|
| 19 | 19 | 24 |
2.5%
|
| 20 | 20 | 36 |
3.8%
|
| 21 | 21 | 29 |
3.1%
|
| 22 | 22 | 84 |
8.8%
|
| 23 | 23 | 56 |
5.9%
|
| 24 | 24 | 60 |
6.3%
|
| 25 | 25 | 26 |
2.7%
|
| 26 | 26 | 19 |
2%
|
| 27 | 27 | 6 |
0.6%
|
| 28 | 28 | 8 |
0.8%
|
| 29 | 29 | 2 |
0.2%
|
| 30 | 30 | 5 |
0.5%
|
| 33 | 33 | 2 |
0.2%
|
| 36 | 36 | 1 |
0.1%
|
| 37 | 37 | 1 |
0.1%
|
| 38 | 38 | 1 |
0.1%
|
| 40 | 40 | 1 |
0.1%
|
| 50 | 50 | 1 |
0.1%
|
| 53 | 53 | 1 |
0.1%
|
| -5 | Missing; Not asked by the interviewer | 0 | |
| -4 | Not asked | 0 | |
| -3 | Not applicable; No studies | 20 | |
| -2 | No answer | 80 | |
| -1 | Don´t know | 0 |