| Value | Category | Cases | |
|---|---|---|---|
| 1 | free of charge | 171 | 
                                                         
                                
                                0.9%
                                                             
                                                     | 
                                            
| 2 | paid | 407 | 
                                                         
                                
                                2.1%
                                                             
                                                     | 
                                            
| 3 | private | 38 | 
                                                         
                                
                                0.2%
                                                             
                                                     | 
                                            
| 11 | 18548 | 
                                                         
                                
                                96.8%
                                                             
                                                     |