| Value | Category | Cases | |
|---|---|---|---|
| 15 | 2 | 
                                    
                                    0.2%
                                 | |
| 16 | 2 | 
                                    
                                    0.2%
                                 | |
| 17 | 16 | 
                                    
                                    1.6%
                                 | |
| 18 | 96 | 
                                    
                                    9.4%
                                 | |
| 19 | 144 | 
                                    
                                    14.1%
                                 | |
| 20 | 129 | 
                                    
                                    12.7%
                                 | |
| 21 | 56 | 
                                    
                                    5.5%
                                 | |
| 22 | 12 | 
                                    
                                    1.2%
                                 | |
| 23 | 4 | 
                                    
                                    0.4%
                                 | |
| 24 | 3 | 
                                    
                                    0.3%
                                 | |
| 25 | 3 | 
                                    
                                    0.3%
                                 | |
| 26 | 1 | 
                                    
                                    0.1%
                                 | |
| 28 | 3 | 
                                    
                                    0.3%
                                 | |
| 29 | 1 | 
                                    
                                    0.1%
                                 | |
| 30 | 3 | 
                                    
                                    0.3%
                                 | |
| 99 | nr | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 543 | 
                                    
                                    53.3%
                                 |