| Value | Category | Cases | |
|---|---|---|---|
| 0 | 910 |
31.3%
|
|
| 1 | 2 |
0.1%
|
|
| 10 | 160 |
5.5%
|
|
| 12 | 3 |
0.1%
|
|
| 15 | 251 |
8.6%
|
|
| 20 | 462 |
15.9%
|
|
| 23 | 1 |
0%
|
|
| 25 | 17 |
0.6%
|
|
| 30 | 830 |
28.6%
|
|
| 35 | 8 |
0.3%
|
|
| 40 | 158 |
5.4%
|
|
| 42 | 1 |
0%
|
|
| 45 | 74 |
2.5%
|
|
| 50 | 11 |
0.4%
|
|
| 59 | 2 |
0.1%
|
|
| 77 | Don't know | 15 |
0.5%
|
| Sysmiss | 2283 |