| Value | Category | Cases | |
|---|---|---|---|
| 0 | 236 |
32.8%
|
|
| 5 | 1 |
0.1%
|
|
| 9 | 1 |
0.1%
|
|
| 10 | 84 |
11.7%
|
|
| 13 | 1 |
0.1%
|
|
| 14 | 1 |
0.1%
|
|
| 15 | 73 |
10.1%
|
|
| 20 | 52 |
7.2%
|
|
| 22 | 1 |
0.1%
|
|
| 25 | 5 |
0.7%
|
|
| 30 | 188 |
26.1%
|
|
| 40 | 10 |
1.4%
|
|
| 45 | 31 |
4.3%
|
|
| 50 | 5 |
0.7%
|
|
| 59 | 1 |
0.1%
|
|
| 77 | Don't know | 30 |
4.2%
|
| Sysmiss | 409 |