| Value | Category | Cases | |
|---|---|---|---|
| 0 | 568 |
55.1%
|
|
| 2 | 1 |
0.1%
|
|
| 5 | 1 |
0.1%
|
|
| 7 | 1 |
0.1%
|
|
| 10 | 32 |
3.1%
|
|
| 15 | 34 |
3.3%
|
|
| 16 | 1 |
0.1%
|
|
| 17 | 1 |
0.1%
|
|
| 20 | 26 |
2.5%
|
|
| 25 | 1 |
0.1%
|
|
| 30 | 280 |
27.2%
|
|
| 35 | 4 |
0.4%
|
|
| 40 | 13 |
1.3%
|
|
| 45 | 37 |
3.6%
|
|
| 50 | 5 |
0.5%
|
|
| 77 | Don't know | 26 |
2.5%
|
| Sysmiss | 3156 |