| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 | 
                                    
                                    3.1%
                                 | 
| 0 | 2 | 
                                    
                                    1.2%
                                 | |
| 1 | 15 | 
                                    
                                    9.3%
                                 | |
| 2 | 19 | 
                                    
                                    11.7%
                                 | |
| 3 | 17 | 
                                    
                                    10.5%
                                 | |
| 4 | 23 | 
                                    
                                    14.2%
                                 | |
| 5 | 13 | 
                                    
                                    8%
                                 | |
| 6 | 7 | 
                                    
                                    4.3%
                                 | |
| 7 | 2 | 
                                    
                                    1.2%
                                 | |
| 8 | 12 | 
                                    
                                    7.4%
                                 | |
| 9 | 2 | 
                                    
                                    1.2%
                                 | |
| 10 | 7 | 
                                    
                                    4.3%
                                 | |
| 11 | 2 | 
                                    
                                    1.2%
                                 | |
| 12 | 1 | 
                                    
                                    0.6%
                                 | |
| 13 | 1 | 
                                    
                                    0.6%
                                 | |
| 14 | 2 | 
                                    
                                    1.2%
                                 | |
| 15 | 2 | 
                                    
                                    1.2%
                                 | |
| 16 | 3 | 
                                    
                                    1.9%
                                 | |
| 17 | 2 | 
                                    
                                    1.2%
                                 | |
| 18 | 3 | 
                                    
                                    1.9%
                                 | |
| 19 | 2 | 
                                    
                                    1.2%
                                 | |
| 21 | 1 | 
                                    
                                    0.6%
                                 | |
| 24 | 1 | 
                                    
                                    0.6%
                                 | |
| 25 | 1 | 
                                    
                                    0.6%
                                 | |
| 26 | 1 | 
                                    
                                    0.6%
                                 | |
| 28 | 1 | 
                                    
                                    0.6%
                                 | |
| 30 | 2 | 
                                    
                                    1.2%
                                 | |
| 35 | 2 | 
                                    
                                    1.2%
                                 | |
| 36 | 1 | 
                                    
                                    0.6%
                                 | |
| 40 | 1 | 
                                    
                                    0.6%
                                 | |
| 55 | 1 | 
                                    
                                    0.6%
                                 | |
| 70 | 1 | 
                                    
                                    0.6%
                                 | |
| 95 | 1 | 
                                    
                                    0.6%
                                 | |
| 105 | 1 | 
                                    
                                    0.6%
                                 | |
| 110 | 1 | 
                                    
                                    0.6%
                                 | |
| 200 | 2 | 
                                    
                                    1.2%
                                 | |
| 360 | 1 | 
                                    
                                    0.6%
                                 | |
| 400 | 1 | 
                                    
                                    0.6%
                                 | |
| Sysmiss | 53 |