| Value | Category | Cases | |
|---|---|---|---|
| 0.5 | 7 | 
                                    
                                    9.7%
                                 | |
| 3 | 9 | 
                                    
                                    12.5%
                                 | |
| 4 | 2 | 
                                    
                                    2.8%
                                 | |
| 5 | 17 | 
                                    
                                    23.6%
                                 | |
| 6 | 2 | 
                                    
                                    2.8%
                                 | |
| 7 | 3 | 
                                    
                                    4.2%
                                 | |
| 8 | 10 | 
                                    
                                    13.9%
                                 | |
| 10 | 6 | 
                                    
                                    8.3%
                                 | |
| 12 | 1 | 
                                    
                                    1.4%
                                 | |
| 15 | 2 | 
                                    
                                    2.8%
                                 | |
| 18 | 1 | 
                                    
                                    1.4%
                                 | |
| 20 | 9 | 
                                    
                                    12.5%
                                 | |
| 25 | 1 | 
                                    
                                    1.4%
                                 | |
| 40 | 2 | 
                                    
                                    2.8%
                                 | |
| 77 | Refuse to answer | 0 | 
                                    
                                    0%
                                 | 
| 99 | Do not know | 0 | 
                                    
                                    0%
                                 | 
| 888 | LESS THAN 1 PER WEEK BUT MORE THAN 0 | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 6148 |