| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don?t know | 0 | 
                                    
                                    0%
                                 | 
| 0 | 17 | 
                                    
                                    13.3%
                                 | |
| 1 | 15 | 
                                    
                                    11.7%
                                 | |
| 2 | 20 | 
                                    
                                    15.6%
                                 | |
| 3 | 12 | 
                                    
                                    9.4%
                                 | |
| 4 | 12 | 
                                    
                                    9.4%
                                 | |
| 5 | 16 | 
                                    
                                    12.5%
                                 | |
| 6 | 4 | 
                                    
                                    3.1%
                                 | |
| 7 | 2 | 
                                    
                                    1.6%
                                 | |
| 8 | 2 | 
                                    
                                    1.6%
                                 | |
| 10 | 14 | 
                                    
                                    10.9%
                                 | |
| 12 | 3 | 
                                    
                                    2.3%
                                 | |
| 15 | 4 | 
                                    
                                    3.1%
                                 | |
| 20 | 1 | 
                                    
                                    0.8%
                                 | |
| 25 | 2 | 
                                    
                                    1.6%
                                 | |
| 50 | 4 | 
                                    
                                    3.1%
                                 |