| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 293 |
72.9%
|
| 0 | 44 |
10.9%
|
|
| 1 | 1 |
0.2%
|
|
| 4 | 1 |
0.2%
|
|
| 5 | 1 |
0.2%
|
|
| 6 | 2 |
0.5%
|
|
| 7 | 3 |
0.7%
|
|
| 8 | 2 |
0.5%
|
|
| 10 | 2 |
0.5%
|
|
| 13 | 1 |
0.2%
|
|
| 15 | 5 |
1.2%
|
|
| 18 | 2 |
0.5%
|
|
| 19 | 2 |
0.5%
|
|
| 20 | 2 |
0.5%
|
|
| 22 | 2 |
0.5%
|
|
| 24 | 2 |
0.5%
|
|
| 30 | 2 |
0.5%
|
|
| 31 | 1 |
0.2%
|
|
| 32 | 1 |
0.2%
|
|
| 35 | 1 |
0.2%
|
|
| 40 | 3 |
0.7%
|
|
| 50 | 2 |
0.5%
|
|
| 59 | 1 |
0.2%
|
|
| 60 | 2 |
0.5%
|
|
| 62 | 1 |
0.2%
|
|
| 70 | 1 |
0.2%
|
|
| 80 | 1 |
0.2%
|
|
| 85 | 1 |
0.2%
|
|
| 100 | 1 |
0.2%
|
|
| 120 | 2 |
0.5%
|
|
| 130 | 1 |
0.2%
|
|
| 146 | 1 |
0.2%
|
|
| 150 | 2 |
0.5%
|
|
| 200 | 2 |
0.5%
|
|
| 201 | 1 |
0.2%
|
|
| 270 | 1 |
0.2%
|
|
| 300 | 1 |
0.2%
|
|
| 400 | 2 |
0.5%
|
|
| 501 | 1 |
0.2%
|
|
| 600 | 1 |
0.2%
|
|
| 689 | 1 |
0.2%
|
|
| 756 | 1 |
0.2%
|
|
| 1300 | 1 |
0.2%
|
|
| 3997 | 1 |
0.2%
|