| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| 0 | 10 | 
                                    
                                    3.8%
                                 | |
| 1 | 16 | 
                                    
                                    6.2%
                                 | |
| 2 | 27 | 
                                    
                                    10.4%
                                 | |
| 3 | 37 | 
                                    
                                    14.2%
                                 | |
| 4 | 24 | 
                                    
                                    9.2%
                                 | |
| 5 | 23 | 
                                    
                                    8.8%
                                 | |
| 6 | 14 | 
                                    
                                    5.4%
                                 | |
| 7 | 6 | 
                                    
                                    2.3%
                                 | |
| 8 | 11 | 
                                    
                                    4.2%
                                 | |
| 9 | 6 | 
                                    
                                    2.3%
                                 | |
| 10 | 8 | 
                                    
                                    3.1%
                                 | |
| 11 | 2 | 
                                    
                                    0.8%
                                 | |
| 12 | 2 | 
                                    
                                    0.8%
                                 | |
| 13 | 3 | 
                                    
                                    1.2%
                                 | |
| 15 | 3 | 
                                    
                                    1.2%
                                 | |
| 16 | 2 | 
                                    
                                    0.8%
                                 | |
| 18 | 2 | 
                                    
                                    0.8%
                                 | |
| 19 | 1 | 
                                    
                                    0.4%
                                 | |
| 20 | 4 | 
                                    
                                    1.5%
                                 | |
| 21 | 2 | 
                                    
                                    0.8%
                                 | |
| 22 | 2 | 
                                    
                                    0.8%
                                 | |
| 23 | 1 | 
                                    
                                    0.4%
                                 | |
| 25 | 4 | 
                                    
                                    1.5%
                                 | |
| 26 | 1 | 
                                    
                                    0.4%
                                 | |
| 27 | 2 | 
                                    
                                    0.8%
                                 | |
| 28 | 2 | 
                                    
                                    0.8%
                                 | |
| 30 | 4 | 
                                    
                                    1.5%
                                 | |
| 31 | 1 | 
                                    
                                    0.4%
                                 | |
| 32 | 1 | 
                                    
                                    0.4%
                                 | |
| 33 | 1 | 
                                    
                                    0.4%
                                 | |
| 34 | 1 | 
                                    
                                    0.4%
                                 | |
| 35 | 3 | 
                                    
                                    1.2%
                                 | |
| 36 | 1 | 
                                    
                                    0.4%
                                 | |
| 37 | 1 | 
                                    
                                    0.4%
                                 | |
| 42 | 2 | 
                                    
                                    0.8%
                                 | |
| 45 | 2 | 
                                    
                                    0.8%
                                 | |
| 49 | 1 | 
                                    
                                    0.4%
                                 | |
| 50 | 1 | 
                                    
                                    0.4%
                                 | |
| 51 | 1 | 
                                    
                                    0.4%
                                 | |
| 55 | 1 | 
                                    
                                    0.4%
                                 | |
| 60 | 2 | 
                                    
                                    0.8%
                                 | |
| 67 | 1 | 
                                    
                                    0.4%
                                 | |
| 70 | 2 | 
                                    
                                    0.8%
                                 | |
| 72 | 2 | 
                                    
                                    0.8%
                                 | |
| 76 | 1 | 
                                    
                                    0.4%
                                 | |
| 78 | 1 | 
                                    
                                    0.4%
                                 | |
| 79 | 1 | 
                                    
                                    0.4%
                                 | |
| 80 | 1 | 
                                    
                                    0.4%
                                 | |
| 85 | 1 | 
                                    
                                    0.4%
                                 | |
| 100 | 1 | 
                                    
                                    0.4%
                                 | |
| 106 | 1 | 
                                    
                                    0.4%
                                 | |
| 113 | 1 | 
                                    
                                    0.4%
                                 | |
| 135 | 1 | 
                                    
                                    0.4%
                                 | |
| 136 | 1 | 
                                    
                                    0.4%
                                 | |
| 161 | 1 | 
                                    
                                    0.4%
                                 | |
| 167 | 1 | 
                                    
                                    0.4%
                                 | |
| 209 | 1 | 
                                    
                                    0.4%
                                 | |
| 266 | 1 | 
                                    
                                    0.4%
                                 | |
| 280 | 1 | 
                                    
                                    0.4%
                                 | |
| 363 | 1 | 
                                    
                                    0.4%
                                 | |
| 563 | 1 | 
                                    
                                    0.4%
                                 | |
| Sysmiss | 142 |