| Value | Category | Cases | |
|---|---|---|---|
| 1 | 30 | 106 | 
                                                                 
                                    
                                    11.3%
                                 
                                                             | 
                                                        
                    
| 2 | 21-26 | 50 | 
                                                                 
                                    
                                    5.3%
                                 
                                                             | 
                                                        
                    
| 3 | 12-20 | 95 | 
                                                                 
                                    
                                    10.1%
                                 
                                                             | 
                                                        
                    
| 4 | 4-10 | 289 | 
                                                                 
                                    
                                    30.8%
                                 
                                                             | 
                                                        
                    
| 5 | 1-3 | 143 | 
                                                                 
                                    
                                    15.3%
                                 
                                                             | 
                                                        
                    
| 6 | less than one | 247 | 
                                                                 
                                    
                                    26.4%
                                 
                                                             | 
                                                        
                    
| 8 | 7 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 3563 |