| Value | Category | Cases | |
|---|---|---|---|
| 0 | 166 |
31.3%
|
|
| 5 | 1 |
0.2%
|
|
| 6 | 1 |
0.2%
|
|
| 10 | 10 |
1.9%
|
|
| 15 | 2 |
0.4%
|
|
| 20 | 7 |
1.3%
|
|
| 25 | 1 |
0.2%
|
|
| 30 | 121 |
22.8%
|
|
| 35 | 4 |
0.8%
|
|
| 40 | 12 |
2.3%
|
|
| 42 | 1 |
0.2%
|
|
| 45 | 25 |
4.7%
|
|
| 49 | 1 |
0.2%
|
|
| 50 | 4 |
0.8%
|
|
| 57 | 1 |
0.2%
|
|
| 59 | 1 |
0.2%
|
|
| 77 | Don't know | 172 |
32.5%
|
| Sysmiss | 4467 |