| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 36 | 
                                    
                                    6.1%
                                 | 
| 0 | 16 | 
                                    
                                    2.7%
                                 | |
| 1 | 73 | 
                                    
                                    12.4%
                                 | |
| 2 | 65 | 
                                    
                                    11%
                                 | |
| 3 | 66 | 
                                    
                                    11.2%
                                 | |
| 4 | 43 | 
                                    
                                    7.3%
                                 | |
| 5 | 35 | 
                                    
                                    5.9%
                                 | |
| 6 | 29 | 
                                    
                                    4.9%
                                 | |
| 7 | 15 | 
                                    
                                    2.5%
                                 | |
| 8 | 15 | 
                                    
                                    2.5%
                                 | |
| 9 | 14 | 
                                    
                                    2.4%
                                 | |
| 10 | 19 | 
                                    
                                    3.2%
                                 | |
| 11 | 7 | 
                                    
                                    1.2%
                                 | |
| 12 | 7 | 
                                    
                                    1.2%
                                 | |
| 13 | 6 | 
                                    
                                    1%
                                 | |
| 14 | 3 | 
                                    
                                    0.5%
                                 | |
| 15 | 3 | 
                                    
                                    0.5%
                                 | |
| 16 | 5 | 
                                    
                                    0.8%
                                 | |
| 17 | 4 | 
                                    
                                    0.7%
                                 | |
| 18 | 7 | 
                                    
                                    1.2%
                                 | |
| 19 | 4 | 
                                    
                                    0.7%
                                 | |
| 20 | 9 | 
                                    
                                    1.5%
                                 | |
| 21 | 1 | 
                                    
                                    0.2%
                                 | |
| 22 | 3 | 
                                    
                                    0.5%
                                 | |
| 23 | 3 | 
                                    
                                    0.5%
                                 | |
| 24 | 2 | 
                                    
                                    0.3%
                                 | |
| 25 | 9 | 
                                    
                                    1.5%
                                 | |
| 26 | 1 | 
                                    
                                    0.2%
                                 | |
| 28 | 1 | 
                                    
                                    0.2%
                                 | |
| 29 | 2 | 
                                    
                                    0.3%
                                 | |
| 30 | 5 | 
                                    
                                    0.8%
                                 | |
| 31 | 2 | 
                                    
                                    0.3%
                                 | |
| 32 | 1 | 
                                    
                                    0.2%
                                 | |
| 33 | 1 | 
                                    
                                    0.2%
                                 | |
| 35 | 4 | 
                                    
                                    0.7%
                                 | |
| 37 | 1 | 
                                    
                                    0.2%
                                 | |
| 39 | 2 | 
                                    
                                    0.3%
                                 | |
| 40 | 5 | 
                                    
                                    0.8%
                                 | |
| 41 | 1 | 
                                    
                                    0.2%
                                 | |
| 42 | 2 | 
                                    
                                    0.3%
                                 | |
| 43 | 3 | 
                                    
                                    0.5%
                                 | |
| 45 | 3 | 
                                    
                                    0.5%
                                 | |
| 50 | 4 | 
                                    
                                    0.7%
                                 | |
| 52 | 3 | 
                                    
                                    0.5%
                                 | |
| 54 | 1 | 
                                    
                                    0.2%
                                 | |
| 55 | 2 | 
                                    
                                    0.3%
                                 | |
| 58 | 1 | 
                                    
                                    0.2%
                                 | |
| 60 | 2 | 
                                    
                                    0.3%
                                 | |
| 64 | 1 | 
                                    
                                    0.2%
                                 | |
| 70 | 1 | 
                                    
                                    0.2%
                                 | |
| 72 | 1 | 
                                    
                                    0.2%
                                 | |
| 75 | 3 | 
                                    
                                    0.5%
                                 | |
| 76 | 1 | 
                                    
                                    0.2%
                                 | |
| 80 | 3 | 
                                    
                                    0.5%
                                 | |
| 83 | 1 | 
                                    
                                    0.2%
                                 | |
| 85 | 2 | 
                                    
                                    0.3%
                                 | |
| 90 | 2 | 
                                    
                                    0.3%
                                 | |
| 92 | 2 | 
                                    
                                    0.3%
                                 | |
| 100 | 2 | 
                                    
                                    0.3%
                                 | |
| 108 | 1 | 
                                    
                                    0.2%
                                 | |
| 110 | 1 | 
                                    
                                    0.2%
                                 | |
| 118 | 1 | 
                                    
                                    0.2%
                                 | |
| 120 | 1 | 
                                    
                                    0.2%
                                 | |
| 123 | 1 | 
                                    
                                    0.2%
                                 | |
| 130 | 1 | 
                                    
                                    0.2%
                                 | |
| 147 | 1 | 
                                    
                                    0.2%
                                 | |
| 150 | 1 | 
                                    
                                    0.2%
                                 | |
| 151 | 1 | 
                                    
                                    0.2%
                                 | |
| 160 | 1 | 
                                    
                                    0.2%
                                 | |
| 165 | 1 | 
                                    
                                    0.2%
                                 | |
| 168 | 1 | 
                                    
                                    0.2%
                                 | |
| 175 | 1 | 
                                    
                                    0.2%
                                 | |
| 180 | 1 | 
                                    
                                    0.2%
                                 | |
| 220 | 1 | 
                                    
                                    0.2%
                                 | |
| 250 | 1 | 
                                    
                                    0.2%
                                 | |
| 280 | 1 | 
                                    
                                    0.2%
                                 | |
| 285 | 1 | 
                                    
                                    0.2%
                                 | |
| 294 | 1 | 
                                    
                                    0.2%
                                 | |
| 300 | 1 | 
                                    
                                    0.2%
                                 | |
| 317 | 1 | 
                                    
                                    0.2%
                                 | |
| 359 | 1 | 
                                    
                                    0.2%
                                 | |
| 470 | 1 | 
                                    
                                    0.2%
                                 | |
| 677 | 1 | 
                                    
                                    0.2%
                                 | |
| 1200 | 1 | 
                                    
                                    0.2%
                                 | |
| 4150 | 1 | 
                                    
                                    0.2%
                                 | |
| Sysmiss | 364 |