| Value | Category | Cases | |
|---|---|---|---|
| 15 | 1 | 
                                    
                                    0.1%
                                 | |
| 16 | 6 | 
                                    
                                    0.6%
                                 | |
| 17 | 13 | 
                                    
                                    1.3%
                                 | |
| 18 | 50 | 
                                    
                                    5%
                                 | |
| 19 | 120 | 
                                    
                                    11.9%
                                 | |
| 20 | 138 | 
                                    
                                    13.7%
                                 | |
| 21 | 54 | 
                                    
                                    5.4%
                                 | |
| 22 | 24 | 
                                    
                                    2.4%
                                 | |
| 23 | 7 | 
                                    
                                    0.7%
                                 | |
| 24 | 8 | 
                                    
                                    0.8%
                                 | |
| 25 | 6 | 
                                    
                                    0.6%
                                 | |
| 26 | 1 | 
                                    
                                    0.1%
                                 | |
| 27 | 1 | 
                                    
                                    0.1%
                                 | |
| 28 | 2 | 
                                    
                                    0.2%
                                 | |
| 30 | 3 | 
                                    
                                    0.3%
                                 | |
| 32 | 1 | 
                                    
                                    0.1%
                                 | |
| 36 | 1 | 
                                    
                                    0.1%
                                 | |
| 99 | nr | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 569 | 
                                    
                                    56.6%
                                 |