| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 22 | 
                                    
                                    8.9%
                                 | 
| 0 | 4 | 
                                    
                                    1.6%
                                 | |
| 1 | 6 | 
                                    
                                    2.4%
                                 | |
| 2 | 4 | 
                                    
                                    1.6%
                                 | |
| 3 | 10 | 
                                    
                                    4%
                                 | |
| 4 | 17 | 
                                    
                                    6.9%
                                 | |
| 5 | 16 | 
                                    
                                    6.5%
                                 | |
| 6 | 20 | 
                                    
                                    8.1%
                                 | |
| 7 | 16 | 
                                    
                                    6.5%
                                 | |
| 8 | 6 | 
                                    
                                    2.4%
                                 | |
| 9 | 7 | 
                                    
                                    2.8%
                                 | |
| 10 | 18 | 
                                    
                                    7.3%
                                 | |
| 11 | 5 | 
                                    
                                    2%
                                 | |
| 12 | 5 | 
                                    
                                    2%
                                 | |
| 13 | 4 | 
                                    
                                    1.6%
                                 | |
| 14 | 2 | 
                                    
                                    0.8%
                                 | |
| 15 | 2 | 
                                    
                                    0.8%
                                 | |
| 16 | 5 | 
                                    
                                    2%
                                 | |
| 17 | 3 | 
                                    
                                    1.2%
                                 | |
| 18 | 5 | 
                                    
                                    2%
                                 | |
| 19 | 2 | 
                                    
                                    0.8%
                                 | |
| 20 | 5 | 
                                    
                                    2%
                                 | |
| 22 | 1 | 
                                    
                                    0.4%
                                 | |
| 23 | 4 | 
                                    
                                    1.6%
                                 | |
| 24 | 5 | 
                                    
                                    2%
                                 | |
| 25 | 2 | 
                                    
                                    0.8%
                                 | |
| 28 | 2 | 
                                    
                                    0.8%
                                 | |
| 30 | 5 | 
                                    
                                    2%
                                 | |
| 31 | 1 | 
                                    
                                    0.4%
                                 | |
| 33 | 1 | 
                                    
                                    0.4%
                                 | |
| 35 | 1 | 
                                    
                                    0.4%
                                 | |
| 36 | 1 | 
                                    
                                    0.4%
                                 | |
| 38 | 1 | 
                                    
                                    0.4%
                                 | |
| 39 | 1 | 
                                    
                                    0.4%
                                 | |
| 40 | 1 | 
                                    
                                    0.4%
                                 | |
| 42 | 2 | 
                                    
                                    0.8%
                                 | |
| 43 | 2 | 
                                    
                                    0.8%
                                 | |
| 44 | 2 | 
                                    
                                    0.8%
                                 | |
| 45 | 1 | 
                                    
                                    0.4%
                                 | |
| 48 | 1 | 
                                    
                                    0.4%
                                 | |
| 50 | 1 | 
                                    
                                    0.4%
                                 | |
| 56 | 1 | 
                                    
                                    0.4%
                                 | |
| 59 | 1 | 
                                    
                                    0.4%
                                 | |
| 60 | 2 | 
                                    
                                    0.8%
                                 | |
| 64 | 1 | 
                                    
                                    0.4%
                                 | |
| 69 | 1 | 
                                    
                                    0.4%
                                 | |
| 75 | 1 | 
                                    
                                    0.4%
                                 | |
| 80 | 2 | 
                                    
                                    0.8%
                                 | |
| 84 | 1 | 
                                    
                                    0.4%
                                 | |
| 90 | 1 | 
                                    
                                    0.4%
                                 | |
| 98 | 1 | 
                                    
                                    0.4%
                                 | |
| 99 | 1 | 
                                    
                                    0.4%
                                 | |
| 100 | 1 | 
                                    
                                    0.4%
                                 | |
| 101 | 1 | 
                                    
                                    0.4%
                                 | |
| 123 | 1 | 
                                    
                                    0.4%
                                 | |
| 128 | 1 | 
                                    
                                    0.4%
                                 | |
| 130 | 1 | 
                                    
                                    0.4%
                                 | |
| 133 | 1 | 
                                    
                                    0.4%
                                 | |
| 143 | 1 | 
                                    
                                    0.4%
                                 | |
| 148 | 1 | 
                                    
                                    0.4%
                                 | |
| 174 | 1 | 
                                    
                                    0.4%
                                 | |
| 190 | 1 | 
                                    
                                    0.4%
                                 | |
| 238 | 1 | 
                                    
                                    0.4%
                                 | |
| 252 | 1 | 
                                    
                                    0.4%
                                 | |
| 387 | 1 | 
                                    
                                    0.4%
                                 | |
| 1070 | 1 | 
                                    
                                    0.4%
                                 | |
| 2231 | 1 | 
                                    
                                    0.4%
                                 | |
| Sysmiss | 708 |