| Value | Category | Cases | |
|---|---|---|---|
| 15 | 1 | 
                                    
                                    0.1%
                                 | |
| 16 | 4 | 
                                    
                                    0.4%
                                 | |
| 17 | 8 | 
                                    
                                    0.8%
                                 | |
| 18 | 69 | 
                                    
                                    6.8%
                                 | |
| 19 | 126 | 
                                    
                                    12.4%
                                 | |
| 20 | 173 | 
                                    
                                    17.1%
                                 | |
| 21 | 56 | 
                                    
                                    5.5%
                                 | |
| 22 | 22 | 
                                    
                                    2.2%
                                 | |
| 23 | 4 | 
                                    
                                    0.4%
                                 | |
| 24 | 5 | 
                                    
                                    0.5%
                                 | |
| 25 | 9 | 
                                    
                                    0.9%
                                 | |
| 26 | 2 | 
                                    
                                    0.2%
                                 | |
| 27 | 2 | 
                                    
                                    0.2%
                                 | |
| 28 | 5 | 
                                    
                                    0.5%
                                 | |
| 29 | 3 | 
                                    
                                    0.3%
                                 | |
| 30 | 1 | 
                                    
                                    0.1%
                                 | |
| 32 | 1 | 
                                    
                                    0.1%
                                 | |
| 34 | 1 | 
                                    
                                    0.1%
                                 | |
| 35 | 1 | 
                                    
                                    0.1%
                                 | |
| 37 | 1 | 
                                    
                                    0.1%
                                 | |
| 43 | 1 | 
                                    
                                    0.1%
                                 | |
| 99 | nr | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 519 | 
                                    
                                    51.2%
                                 |