| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 | 
                                    
                                    2.8%
                                 | |
| 1 | 1 | 
                                    
                                    2.8%
                                 | |
| 2 | 1 | 
                                    
                                    2.8%
                                 | |
| 4 | 2 | 
                                    
                                    5.6%
                                 | |
| 5 | 2 | 
                                    
                                    5.6%
                                 | |
| 7 | 1 | 
                                    
                                    2.8%
                                 | |
| 9 | 2 | 
                                    
                                    5.6%
                                 | |
| 13 | 2 | 
                                    
                                    5.6%
                                 | |
| 14 | 1 | 
                                    
                                    2.8%
                                 | |
| 20 | 1 | 
                                    
                                    2.8%
                                 | |
| 21 | 1 | 
                                    
                                    2.8%
                                 | |
| 23 | 1 | 
                                    
                                    2.8%
                                 | |
| 25 | 1 | 
                                    
                                    2.8%
                                 | |
| 28 | 2 | 
                                    
                                    5.6%
                                 | |
| 29 | 1 | 
                                    
                                    2.8%
                                 | |
| 30 | 2 | 
                                    
                                    5.6%
                                 | |
| 37 | 2 | 
                                    
                                    5.6%
                                 | |
| 40 | 1 | 
                                    
                                    2.8%
                                 | |
| 41 | 2 | 
                                    
                                    5.6%
                                 | |
| 42 | 1 | 
                                    
                                    2.8%
                                 | |
| 45 | 2 | 
                                    
                                    5.6%
                                 | |
| 50 | 1 | 
                                    
                                    2.8%
                                 | |
| 54 | 1 | 
                                    
                                    2.8%
                                 | |
| 59 | 1 | 
                                    
                                    2.8%
                                 | |
| 88 | Don't know | 0 | 
                                    
                                    0%
                                 | 
| 99 | Missing | 3 | 
                                    
                                    8.3%
                                 | 
| Sysmiss | 966 |