| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. No, no difficulty | 26036 | 
                                                                 
                                    
                                    98%
                                 
                                                             | 
                                                        
                    
| 2 | 2. Yes, some | 388 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    
| 3 | 3. Yes, a lot | 86 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| 4 | 4. Cannot see | 46 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             |