| Value | Category | Cases | |
|---|---|---|---|
| 0 | 514 |
90.7%
|
|
| 1 | 12 |
2.1%
|
|
| 2 | 6 |
1.1%
|
|
| 3 | 4 |
0.7%
|
|
| 4 | 5 |
0.9%
|
|
| 5 | 2 |
0.4%
|
|
| 6 | 1 |
0.2%
|
|
| 7 | 2 |
0.4%
|
|
| 10 | 2 |
0.4%
|
|
| 15 | 2 |
0.4%
|
|
| 20 | 8 |
1.4%
|
|
| 25 | 1 |
0.2%
|
|
| 40 | 2 |
0.4%
|
|
| 50 | 2 |
0.4%
|
|
| 77 | Don't know | 4 |
0.7%
|
| Sysmiss | 820 |