| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 |
0.1%
|
|
| 2 | 1 |
0.1%
|
|
| 4 | 2 |
0.2%
|
|
| 5 | 13 |
1.4%
|
|
| 6 | 69 |
7.3%
|
|
| 7 | 30 |
3.2%
|
|
| 8 | 48 |
5.1%
|
|
| 9 | 96 |
10.2%
|
|
| 10 | 149 |
15.8%
|
|
| 11 | 218 |
23.2%
|
|
| 12 | 188 |
20%
|
|
| 13 | 54 |
5.7%
|
|
| 14 | 22 |
2.3%
|
|
| 15 | 18 |
1.9%
|
|
| 16 | 8 |
0.9%
|
|
| 17 | 9 |
1%
|
|
| 18 | 7 |
0.7%
|
|
| 19 | 2 |
0.2%
|
|
| 20 | 2 |
0.2%
|
|
| 77 | Don't know | 4 |
0.4%
|
| Sysmiss | 17 |