| Value | Category | Cases | |
|---|---|---|---|
| 1 | Absolutely essential | 414 | 
                                    
                                    35.2%
                                 | 
| 2 | Important | 157 | 
                                    
                                    13.3%
                                 | 
| 3 | Not very important | 67 | 
                                    
                                    5.7%
                                 | 
| 4 | Not important at all | 220 | 
                                    
                                    18.7%
                                 | 
| 5 | Don't know | 315 | 
                                    
                                    26.8%
                                 | 
| 98 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 99 | Missing data | 4 | 
                                    
                                    0.3%
                                 |