| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 | 
                                    
                                    0.7%
                                 | |
| 1 | To no degree at all | 1 | 
                                    
                                    0.7%
                                 | 
| 2 | 3 | 
                                    
                                    2.2%
                                 | |
| 3 | 3 | 
                                    
                                    2.2%
                                 | |
| 4 | 8 | 
                                    
                                    6%
                                 | |
| 5 | 21 | 
                                    
                                    15.7%
                                 | |
| 6 | 22 | 
                                    
                                    16.4%
                                 | |
| 7 | 24 | 
                                    
                                    17.9%
                                 | |
| 8 | 20 | 
                                    
                                    14.9%
                                 | |
| 9 | 6 | 
                                    
                                    4.5%
                                 | |
| 10 | To a very significant degree | 13 | 
                                    
                                    9.7%
                                 | 
| 11 | Don't know | 12 | 
                                    
                                    9%
                                 |