| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 10 | 8 |
1.4%
|
|
| 15 | 26 |
4.4%
|
|
| 20 | 50 |
8.5%
|
|
| 25 | 34 |
5.8%
|
|
| 30 | 72 |
12.3%
|
|
| 31 | 1 |
0.2%
|
|
| 35 | 42 |
7.2%
|
|
| 40 | 87 |
14.9%
|
|
| 45 | 16 |
2.7%
|
|
| 50 | 103 |
17.6%
|
|
| 51 | 1 |
0.2%
|
|
| 55 | 7 |
1.2%
|
|
| 58 | 1 |
0.2%
|
|
| 60 | 63 |
10.8%
|
|
| 65 | 11 |
1.9%
|
|
| 70 | 24 |
4.1%
|
|
| 75 | 7 |
1.2%
|
|
| 80 | 24 |
4.1%
|
|
| 85 | 2 |
0.3%
|
|
| 90 | 5 |
0.9%
|
|
| 95 | 1 |
0.2%
|
|
| Sysmiss | 511 |