| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 | 
                                    
                                    1%
                                 | 
| 0 | 91 | 
                                    
                                    12.5%
                                 | |
| 2 | 3 | 
                                    
                                    0.4%
                                 | |
| 5 | 6 | 
                                    
                                    0.8%
                                 | |
| 10 | 23 | 
                                    
                                    3.2%
                                 | |
| 15 | 4 | 
                                    
                                    0.5%
                                 | |
| 16 | 1 | 
                                    
                                    0.1%
                                 | |
| 20 | 48 | 
                                    
                                    6.6%
                                 | |
| 21 | 1 | 
                                    
                                    0.1%
                                 | |
| 23 | 1 | 
                                    
                                    0.1%
                                 | |
| 25 | 4 | 
                                    
                                    0.5%
                                 | |
| 30 | 41 | 
                                    
                                    5.6%
                                 | |
| 32 | 1 | 
                                    
                                    0.1%
                                 | |
| 35 | 2 | 
                                    
                                    0.3%
                                 | |
| 36 | 1 | 
                                    
                                    0.1%
                                 | |
| 40 | 28 | 
                                    
                                    3.8%
                                 | |
| 44 | 1 | 
                                    
                                    0.1%
                                 | |
| 45 | 1 | 
                                    
                                    0.1%
                                 | |
| 50 | 53 | 
                                    
                                    7.3%
                                 | |
| 51 | 1 | 
                                    
                                    0.1%
                                 | |
| 55 | 2 | 
                                    
                                    0.3%
                                 | |
| 57 | 1 | 
                                    
                                    0.1%
                                 | |
| 59 | 1 | 
                                    
                                    0.1%
                                 | |
| 60 | 18 | 
                                    
                                    2.5%
                                 | |
| 64 | 1 | 
                                    
                                    0.1%
                                 | |
| 65 | 4 | 
                                    
                                    0.5%
                                 | |
| 66 | 2 | 
                                    
                                    0.3%
                                 | |
| 68 | 2 | 
                                    
                                    0.3%
                                 | |
| 70 | 16 | 
                                    
                                    2.2%
                                 | |
| 75 | 2 | 
                                    
                                    0.3%
                                 | |
| 76 | 1 | 
                                    
                                    0.1%
                                 | |
| 80 | 22 | 
                                    
                                    3%
                                 | |
| 85 | 4 | 
                                    
                                    0.5%
                                 | |
| 90 | 10 | 
                                    
                                    1.4%
                                 | |
| 95 | 3 | 
                                    
                                    0.4%
                                 | |
| 97 | 1 | 
                                    
                                    0.1%
                                 | |
| 98 | 3 | 
                                    
                                    0.4%
                                 | |
| 99 | 1 | 
                                    
                                    0.1%
                                 | |
| 100 | 317 | 
                                    
                                    43.5%
                                 | |
| Sysmiss | 226 |