| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 | 
                                    
                                    0%
                                 | 
| -9 | Don't know (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| 1 | 3 | 
                                    
                                    4.8%
                                 | |
| 2 | 7 | 
                                    
                                    11.1%
                                 | |
| 3 | 4 | 
                                    
                                    6.3%
                                 | |
| 4 | 2 | 
                                    
                                    3.2%
                                 | |
| 5 | 18 | 
                                    
                                    28.6%
                                 | |
| 6 | 2 | 
                                    
                                    3.2%
                                 | |
| 7 | 2 | 
                                    
                                    3.2%
                                 | |
| 10 | 11 | 
                                    
                                    17.5%
                                 | |
| 12 | 1 | 
                                    
                                    1.6%
                                 | |
| 15 | 2 | 
                                    
                                    3.2%
                                 | |
| 20 | 2 | 
                                    
                                    3.2%
                                 | |
| 21 | 1 | 
                                    
                                    1.6%
                                 | |
| 25 | 3 | 
                                    
                                    4.8%
                                 | |
| 30 | 2 | 
                                    
                                    3.2%
                                 | |
| 60 | 1 | 
                                    
                                    1.6%
                                 | |
| 100 | 1 | 
                                    
                                    1.6%
                                 | |
| 200 | 1 | 
                                    
                                    1.6%
                                 | |
| Sysmiss | 282 |