| Value | Category | Cases | |
|---|---|---|---|
| 0 | 110 | 
                                    
                                    27.6%
                                 | |
| 10 | 5 | 
                                    
                                    1.3%
                                 | |
| 15 | 1 | 
                                    
                                    0.3%
                                 | |
| 20 | 154 | 
                                    
                                    38.7%
                                 | |
| 25 | 2 | 
                                    
                                    0.5%
                                 | |
| 30 | 99 | 
                                    
                                    24.9%
                                 | |
| 40 | 9 | 
                                    
                                    2.3%
                                 | |
| 50 | 18 | 
                                    
                                    4.5%
                                 | |
| Sysmiss | 2 |