| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 27 |
7.5%
|
| 0 | 218 |
60.6%
|
|
| 1 | 1 |
0.3%
|
|
| 2 | 2 |
0.6%
|
|
| 3 | 3 |
0.8%
|
|
| 5 | 3 |
0.8%
|
|
| 8 | 2 |
0.6%
|
|
| 10 | 12 |
3.3%
|
|
| 11 | 1 |
0.3%
|
|
| 15 | 6 |
1.7%
|
|
| 20 | 14 |
3.9%
|
|
| 23 | 1 |
0.3%
|
|
| 25 | 1 |
0.3%
|
|
| 30 | 19 |
5.3%
|
|
| 35 | 1 |
0.3%
|
|
| 40 | 3 |
0.8%
|
|
| 50 | 17 |
4.7%
|
|
| 60 | 5 |
1.4%
|
|
| 70 | 2 |
0.6%
|
|
| 80 | 7 |
1.9%
|
|
| 90 | 2 |
0.6%
|
|
| 93 | 1 |
0.3%
|
|
| 99 | 2 |
0.6%
|
|
| 100 | 10 |
2.8%
|