| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't Know | 0 | 
                                    
                                    0%
                                 | 
| -88 | Refusal | 0 | 
                                    
                                    0%
                                 | 
| -77 | Not applicable | 1 | 
                                    
                                    0.5%
                                 | 
| 0 | 75 | 
                                    
                                    34.6%
                                 | |
| 5 | 3 | 
                                    
                                    1.4%
                                 | |
| 7 | 1 | 
                                    
                                    0.5%
                                 | |
| 10 | 3 | 
                                    
                                    1.4%
                                 | |
| 15 | 8 | 
                                    
                                    3.7%
                                 | |
| 20 | 16 | 
                                    
                                    7.4%
                                 | |
| 25 | 5 | 
                                    
                                    2.3%
                                 | |
| 30 | 80 | 
                                    
                                    36.9%
                                 | |
| 35 | 1 | 
                                    
                                    0.5%
                                 | |
| 40 | 10 | 
                                    
                                    4.6%
                                 | |
| 45 | 13 | 
                                    
                                    6%
                                 | |
| 50 | 1 | 
                                    
                                    0.5%
                                 | |
| Sysmiss | 718 |