| Value | Category | Cases | |
|---|---|---|---|
| 0 | 15 |
2.9%
|
|
| 1 | 4 |
0.8%
|
|
| 2 | 3 |
0.6%
|
|
| 3 | 2 |
0.4%
|
|
| 4 | 3 |
0.6%
|
|
| 5 | 16 |
3.1%
|
|
| 6 | 2 |
0.4%
|
|
| 10 | 34 |
6.7%
|
|
| 15 | 63 |
12.3%
|
|
| 20 | 55 |
10.8%
|
|
| 25 | 13 |
2.5%
|
|
| 30 | 172 |
33.7%
|
|
| 35 | 8 |
1.6%
|
|
| 40 | 13 |
2.5%
|
|
| 41 | 1 |
0.2%
|
|
| 45 | 74 |
14.5%
|
|
| 50 | 12 |
2.3%
|
|
| 55 | 1 |
0.2%
|
|
| 60 | 13 |
2.5%
|
|
| 77 | Don't know | 6 |
1.2%
|
| 90 | 1 |
0.2%
|
|
| Sysmiss | 1519 |