| Value | Category | Cases | |
|---|---|---|---|
| 0 | 355 |
43.5%
|
|
| 3 | 1 |
0.1%
|
|
| 10 | 13 |
1.6%
|
|
| 15 | 25 |
3.1%
|
|
| 17 | 1 |
0.1%
|
|
| 20 | 22 |
2.7%
|
|
| 25 | 12 |
1.5%
|
|
| 30 | 216 |
26.4%
|
|
| 35 | 7 |
0.9%
|
|
| 40 | 13 |
1.6%
|
|
| 45 | 56 |
6.9%
|
|
| 50 | 12 |
1.5%
|
|
| 55 | 5 |
0.6%
|
|
| 59 | 1 |
0.1%
|
|
| 77 | Don't know | 78 |
9.5%
|
| Sysmiss | 3553 |