| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 20 | 
                                    
                                    5.5%
                                 | 
| 0 | 9 | 
                                    
                                    2.5%
                                 | |
| 1 | 22 | 
                                    
                                    6%
                                 | |
| 2 | 35 | 
                                    
                                    9.6%
                                 | |
| 3 | 32 | 
                                    
                                    8.8%
                                 | |
| 4 | 28 | 
                                    
                                    7.7%
                                 | |
| 5 | 16 | 
                                    
                                    4.4%
                                 | |
| 6 | 11 | 
                                    
                                    3%
                                 | |
| 7 | 9 | 
                                    
                                    2.5%
                                 | |
| 8 | 11 | 
                                    
                                    3%
                                 | |
| 9 | 3 | 
                                    
                                    0.8%
                                 | |
| 10 | 13 | 
                                    
                                    3.6%
                                 | |
| 11 | 1 | 
                                    
                                    0.3%
                                 | |
| 12 | 6 | 
                                    
                                    1.6%
                                 | |
| 13 | 3 | 
                                    
                                    0.8%
                                 | |
| 14 | 3 | 
                                    
                                    0.8%
                                 | |
| 15 | 10 | 
                                    
                                    2.7%
                                 | |
| 16 | 7 | 
                                    
                                    1.9%
                                 | |
| 17 | 1 | 
                                    
                                    0.3%
                                 | |
| 18 | 9 | 
                                    
                                    2.5%
                                 | |
| 20 | 8 | 
                                    
                                    2.2%
                                 | |
| 21 | 4 | 
                                    
                                    1.1%
                                 | |
| 22 | 2 | 
                                    
                                    0.5%
                                 | |
| 23 | 2 | 
                                    
                                    0.5%
                                 | |
| 24 | 2 | 
                                    
                                    0.5%
                                 | |
| 25 | 3 | 
                                    
                                    0.8%
                                 | |
| 26 | 1 | 
                                    
                                    0.3%
                                 | |
| 27 | 2 | 
                                    
                                    0.5%
                                 | |
| 28 | 2 | 
                                    
                                    0.5%
                                 | |
| 29 | 2 | 
                                    
                                    0.5%
                                 | |
| 30 | 6 | 
                                    
                                    1.6%
                                 | |
| 31 | 1 | 
                                    
                                    0.3%
                                 | |
| 32 | 3 | 
                                    
                                    0.8%
                                 | |
| 33 | 2 | 
                                    
                                    0.5%
                                 | |
| 34 | 3 | 
                                    
                                    0.8%
                                 | |
| 35 | 5 | 
                                    
                                    1.4%
                                 | |
| 37 | 2 | 
                                    
                                    0.5%
                                 | |
| 38 | 1 | 
                                    
                                    0.3%
                                 | |
| 40 | 3 | 
                                    
                                    0.8%
                                 | |
| 46 | 1 | 
                                    
                                    0.3%
                                 | |
| 49 | 2 | 
                                    
                                    0.5%
                                 | |
| 50 | 2 | 
                                    
                                    0.5%
                                 | |
| 51 | 1 | 
                                    
                                    0.3%
                                 | |
| 54 | 2 | 
                                    
                                    0.5%
                                 | |
| 55 | 1 | 
                                    
                                    0.3%
                                 | |
| 57 | 1 | 
                                    
                                    0.3%
                                 | |
| 60 | 3 | 
                                    
                                    0.8%
                                 | |
| 65 | 1 | 
                                    
                                    0.3%
                                 | |
| 66 | 2 | 
                                    
                                    0.5%
                                 | |
| 70 | 3 | 
                                    
                                    0.8%
                                 | |
| 74 | 1 | 
                                    
                                    0.3%
                                 | |
| 75 | 1 | 
                                    
                                    0.3%
                                 | |
| 81 | 1 | 
                                    
                                    0.3%
                                 | |
| 82 | 1 | 
                                    
                                    0.3%
                                 | |
| 85 | 1 | 
                                    
                                    0.3%
                                 | |
| 87 | 1 | 
                                    
                                    0.3%
                                 | |
| 88 | 1 | 
                                    
                                    0.3%
                                 | |
| 90 | 1 | 
                                    
                                    0.3%
                                 | |
| 100 | 3 | 
                                    
                                    0.8%
                                 | |
| 106 | 1 | 
                                    
                                    0.3%
                                 | |
| 110 | 1 | 
                                    
                                    0.3%
                                 | |
| 120 | 4 | 
                                    
                                    1.1%
                                 | |
| 130 | 1 | 
                                    
                                    0.3%
                                 | |
| 138 | 1 | 
                                    
                                    0.3%
                                 | |
| 139 | 1 | 
                                    
                                    0.3%
                                 | |
| 140 | 2 | 
                                    
                                    0.5%
                                 | |
| 144 | 1 | 
                                    
                                    0.3%
                                 | |
| 150 | 2 | 
                                    
                                    0.5%
                                 | |
| 156 | 1 | 
                                    
                                    0.3%
                                 | |
| 160 | 2 | 
                                    
                                    0.5%
                                 | |
| 165 | 1 | 
                                    
                                    0.3%
                                 | |
| 169 | 1 | 
                                    
                                    0.3%
                                 | |
| 170 | 1 | 
                                    
                                    0.3%
                                 | |
| 175 | 1 | 
                                    
                                    0.3%
                                 | |
| 180 | 1 | 
                                    
                                    0.3%
                                 | |
| 189 | 1 | 
                                    
                                    0.3%
                                 | |
| 199 | 1 | 
                                    
                                    0.3%
                                 | |
| 200 | 1 | 
                                    
                                    0.3%
                                 | |
| 235 | 1 | 
                                    
                                    0.3%
                                 | |
| 280 | 1 | 
                                    
                                    0.3%
                                 | |
| 324 | 1 | 
                                    
                                    0.3%
                                 | |
| 550 | 1 | 
                                    
                                    0.3%
                                 | |
| 700 | 1 | 
                                    
                                    0.3%
                                 | |
| 8882 | 1 | 
                                    
                                    0.3%
                                 | |
| Sysmiss | 591 |