| Value | Category | Cases | |
|---|---|---|---|
| 20 | 3 | 
                                    
                                    0.4%
                                 | |
| 30 | 1 | 
                                    
                                    0.1%
                                 | |
| 40 | 2 | 
                                    
                                    0.3%
                                 | |
| 50 | 41 | 
                                    
                                    5.4%
                                 | |
| 60 | 2 | 
                                    
                                    0.3%
                                 | |
| 77 | Refuse to answer | 1 | 
                                    
                                    0.1%
                                 | 
| 80 | 1 | 
                                    
                                    0.1%
                                 | |
| 99 | Do not know | 1 | 
                                    
                                    0.1%
                                 | 
| 100 | 599 | 
                                    
                                    78.9%
                                 | |
| 108 | 1 | 
                                    
                                    0.1%
                                 | |
| 150 | 11 | 
                                    
                                    1.4%
                                 | |
| 170 | 1 | 
                                    
                                    0.1%
                                 | |
| 180 | 1 | 
                                    
                                    0.1%
                                 | |
| 200 | 63 | 
                                    
                                    8.3%
                                 | |
| 250 | 1 | 
                                    
                                    0.1%
                                 | |
| 300 | 17 | 
                                    
                                    2.2%
                                 | |
| 400 | 3 | 
                                    
                                    0.4%
                                 | |
| 430 | 1 | 
                                    
                                    0.1%
                                 | |
| 500 | 7 | 
                                    
                                    0.9%
                                 | |
| 600 | 2 | 
                                    
                                    0.3%
                                 | |
| Sysmiss | 5461 |