| Value | Category | Cases | |
|---|---|---|---|
| 1 | Always Available | 304 | 
                                                                 
                                    
                                    91.3%
                                 
                                                             | 
                                                        
                    
| 2 | Sometimes Available | 21 | 
                                                                 
                                    
                                    6.3%
                                 
                                                             | 
                                                        
                    
| 3 | Never Available | 8 | 
                                                                 
                                    
                                    2.4%
                                 
                                                             |