| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 76 | 
                                    
                                    5.4%
                                 | 
| 0 | 914 | 
                                    
                                    64.5%
                                 | |
| 1 | 40 | 
                                    
                                    2.8%
                                 | |
| 2 | 40 | 
                                    
                                    2.8%
                                 | |
| 3 | 22 | 
                                    
                                    1.6%
                                 | |
| 4 | 20 | 
                                    
                                    1.4%
                                 | |
| 5 | 53 | 
                                    
                                    3.7%
                                 | |
| 6 | 13 | 
                                    
                                    0.9%
                                 | |
| 7 | 10 | 
                                    
                                    0.7%
                                 | |
| 8 | 5 | 
                                    
                                    0.4%
                                 | |
| 9 | 4 | 
                                    
                                    0.3%
                                 | |
| 10 | 48 | 
                                    
                                    3.4%
                                 | |
| 11 | 4 | 
                                    
                                    0.3%
                                 | |
| 12 | 5 | 
                                    
                                    0.4%
                                 | |
| 13 | 1 | 
                                    
                                    0.1%
                                 | |
| 14 | 5 | 
                                    
                                    0.4%
                                 | |
| 15 | 13 | 
                                    
                                    0.9%
                                 | |
| 16 | 1 | 
                                    
                                    0.1%
                                 | |
| 17 | 2 | 
                                    
                                    0.1%
                                 | |
| 18 | 2 | 
                                    
                                    0.1%
                                 | |
| 19 | 1 | 
                                    
                                    0.1%
                                 | |
| 20 | 36 | 
                                    
                                    2.5%
                                 | |
| 23 | 1 | 
                                    
                                    0.1%
                                 | |
| 25 | 5 | 
                                    
                                    0.4%
                                 | |
| 27 | 1 | 
                                    
                                    0.1%
                                 | |
| 29 | 2 | 
                                    
                                    0.1%
                                 | |
| 30 | 14 | 
                                    
                                    1%
                                 | |
| 31 | 1 | 
                                    
                                    0.1%
                                 | |
| 34 | 1 | 
                                    
                                    0.1%
                                 | |
| 35 | 2 | 
                                    
                                    0.1%
                                 | |
| 36 | 1 | 
                                    
                                    0.1%
                                 | |
| 38 | 2 | 
                                    
                                    0.1%
                                 | |
| 40 | 5 | 
                                    
                                    0.4%
                                 | |
| 42 | 2 | 
                                    
                                    0.1%
                                 | |
| 45 | 3 | 
                                    
                                    0.2%
                                 | |
| 50 | 9 | 
                                    
                                    0.6%
                                 | |
| 52 | 1 | 
                                    
                                    0.1%
                                 | |
| 57 | 1 | 
                                    
                                    0.1%
                                 | |
| 60 | 3 | 
                                    
                                    0.2%
                                 | |
| 65 | 1 | 
                                    
                                    0.1%
                                 | |
| 68 | 1 | 
                                    
                                    0.1%
                                 | |
| 70 | 2 | 
                                    
                                    0.1%
                                 | |
| 74 | 1 | 
                                    
                                    0.1%
                                 | |
| 75 | 1 | 
                                    
                                    0.1%
                                 | |
| 78 | 1 | 
                                    
                                    0.1%
                                 | |
| 80 | 2 | 
                                    
                                    0.1%
                                 | |
| 84 | 1 | 
                                    
                                    0.1%
                                 | |
| 85 | 1 | 
                                    
                                    0.1%
                                 | |
| 91 | 1 | 
                                    
                                    0.1%
                                 | |
| 100 | 10 | 
                                    
                                    0.7%
                                 | |
| 102 | 1 | 
                                    
                                    0.1%
                                 | |
| 118 | 1 | 
                                    
                                    0.1%
                                 | |
| 120 | 3 | 
                                    
                                    0.2%
                                 | |
| 133 | 1 | 
                                    
                                    0.1%
                                 | |
| 150 | 2 | 
                                    
                                    0.1%
                                 | |
| 180 | 3 | 
                                    
                                    0.2%
                                 | |
| 190 | 1 | 
                                    
                                    0.1%
                                 | |
| 195 | 1 | 
                                    
                                    0.1%
                                 | |
| 200 | 3 | 
                                    
                                    0.2%
                                 | |
| 205 | 1 | 
                                    
                                    0.1%
                                 | |
| 217 | 1 | 
                                    
                                    0.1%
                                 | |
| 250 | 1 | 
                                    
                                    0.1%
                                 | |
| 280 | 1 | 
                                    
                                    0.1%
                                 | |
| 303 | 1 | 
                                    
                                    0.1%
                                 | |
| 310 | 1 | 
                                    
                                    0.1%
                                 | |
| 375 | 1 | 
                                    
                                    0.1%
                                 | |
| 400 | 1 | 
                                    
                                    0.1%
                                 | |
| 1500 | 1 | 
                                    
                                    0.1%
                                 |