| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 8 | 
                                    
                                    5.9%
                                 | 
| -8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 0 | 3 | 
                                    
                                    2.2%
                                 | |
| 1 | 20 | 
                                    
                                    14.8%
                                 | |
| 2 | 12 | 
                                    
                                    8.9%
                                 | |
| 3 | 9 | 
                                    
                                    6.7%
                                 | |
| 4 | 2 | 
                                    
                                    1.5%
                                 | |
| 5 | 26 | 
                                    
                                    19.3%
                                 | |
| 7 | 2 | 
                                    
                                    1.5%
                                 | |
| 10 | 23 | 
                                    
                                    17%
                                 | |
| 15 | 4 | 
                                    
                                    3%
                                 | |
| 20 | 21 | 
                                    
                                    15.6%
                                 | |
| 25 | 1 | 
                                    
                                    0.7%
                                 | |
| 30 | 3 | 
                                    
                                    2.2%
                                 | |
| 75 | 1 | 
                                    
                                    0.7%
                                 | |
| Sysmiss | 820 |