| Value | Category | Cases | |
|---|---|---|---|
| 0 | 504 | 
                                    
                                    59.6%
                                 | |
| 1 | 50 | 
                                    
                                    5.9%
                                 | |
| 2 | 51 | 
                                    
                                    6%
                                 | |
| 3 | 34 | 
                                    
                                    4%
                                 | |
| 4 | 34 | 
                                    
                                    4%
                                 | |
| 5 | 14 | 
                                    
                                    1.7%
                                 | |
| 6 | 18 | 
                                    
                                    2.1%
                                 | |
| 7 | 4 | 
                                    
                                    0.5%
                                 | |
| 8 | 18 | 
                                    
                                    2.1%
                                 | |
| 9 | 3 | 
                                    
                                    0.4%
                                 | |
| 10 | 17 | 
                                    
                                    2%
                                 | |
| 12 | 12 | 
                                    
                                    1.4%
                                 | |
| 14 | 1 | 
                                    
                                    0.1%
                                 | |
| 15 | 3 | 
                                    
                                    0.4%
                                 | |
| 16 | 1 | 
                                    
                                    0.1%
                                 | |
| 20 | 2 | 
                                    
                                    0.2%
                                 | |
| 24 | 2 | 
                                    
                                    0.2%
                                 | |
| 25 | 2 | 
                                    
                                    0.2%
                                 | |
| 30 | 1 | 
                                    
                                    0.1%
                                 | |
| 40 | 2 | 
                                    
                                    0.2%
                                 | |
| 77 | Don't know | 72 | 
                                    
                                    8.5%
                                 | 
| Sysmiss | 3457 |