| Value | Category | Cases | |
|---|---|---|---|
| 16 | 2 | 
                                    
                                    0.1%
                                 | |
| 17 | 9 | 
                                    
                                    0.7%
                                 | |
| 18 | 27 | 
                                    
                                    2%
                                 | |
| 19 | 54 | 
                                    
                                    4%
                                 | |
| 20 | 98 | 
                                    
                                    7.3%
                                 | |
| 21 | 136 | 
                                    
                                    10.1%
                                 | |
| 22 | 139 | 
                                    
                                    10.4%
                                 | |
| 23 | 173 | 
                                    
                                    12.9%
                                 | |
| 24 | 135 | 
                                    
                                    10.1%
                                 | |
| 25 | 149 | 
                                    
                                    11.1%
                                 | |
| 26 | 87 | 
                                    
                                    6.5%
                                 | |
| 27 | 92 | 
                                    
                                    6.9%
                                 | |
| 28 | 68 | 
                                    
                                    5.1%
                                 | |
| 29 | 35 | 
                                    
                                    2.6%
                                 | |
| 30 | 47 | 
                                    
                                    3.5%
                                 | |
| 31 | 12 | 
                                    
                                    0.9%
                                 | |
| 32 | 15 | 
                                    
                                    1.1%
                                 | |
| 33 | 12 | 
                                    
                                    0.9%
                                 | |
| 34 | 6 | 
                                    
                                    0.4%
                                 | |
| 35 | 4 | 
                                    
                                    0.3%
                                 | |
| 36 | 5 | 
                                    
                                    0.4%
                                 | |
| 37 | 5 | 
                                    
                                    0.4%
                                 | |
| 38 | 2 | 
                                    
                                    0.1%
                                 | |
| 39 | 1 | 
                                    
                                    0.1%
                                 | |
| 40 | 1 | 
                                    
                                    0.1%
                                 | |
| 41 | 2 | 
                                    
                                    0.1%
                                 | |
| 42 | 1 | 
                                    
                                    0.1%
                                 | |
| 43 | 1 | 
                                    
                                    0.1%
                                 | |
| 44 | 1 | 
                                    
                                    0.1%
                                 | |
| 48 | 1 | 
                                    
                                    0.1%
                                 | |
| 88 | Don't know | 17 | 
                                    
                                    1.3%
                                 | 
| 99 | Missing | 3 | 
                                    
                                    0.2%
                                 | 
| Sysmiss | 528 |