| Value | Category | Cases | |
|---|---|---|---|
| -2 | don't know | 1 | 
                                    
                                    0.3%
                                 | 
| -1 | refuse | 4 | 
                                    
                                    1.3%
                                 | 
| 0 | 100 | 
                                    
                                    32.9%
                                 | |
| 1 | 31 | 
                                    
                                    10.2%
                                 | |
| 2 | 44 | 
                                    
                                    14.5%
                                 | |
| 3 | 29 | 
                                    
                                    9.5%
                                 | |
| 4 | 23 | 
                                    
                                    7.6%
                                 | |
| 5 | 15 | 
                                    
                                    4.9%
                                 | |
| 6 | 12 | 
                                    
                                    3.9%
                                 | |
| 7 | 10 | 
                                    
                                    3.3%
                                 | |
| 8 | 7 | 
                                    
                                    2.3%
                                 | |
| 9 | 6 | 
                                    
                                    2%
                                 | |
| 10 | 6 | 
                                    
                                    2%
                                 | |
| 11 | 3 | 
                                    
                                    1%
                                 | |
| 13 | 1 | 
                                    
                                    0.3%
                                 | |
| 14 | 1 | 
                                    
                                    0.3%
                                 | |
| 17 | 2 | 
                                    
                                    0.7%
                                 | |
| 20 | 3 | 
                                    
                                    1%
                                 | |
| 22 | 1 | 
                                    
                                    0.3%
                                 | |
| 24 | 1 | 
                                    
                                    0.3%
                                 | |
| 26 | 1 | 
                                    
                                    0.3%
                                 | |
| 28 | 1 | 
                                    
                                    0.3%
                                 | |
| 31 | 1 | 
                                    
                                    0.3%
                                 | |
| 42 | 1 | 
                                    
                                    0.3%
                                 | |
| Sysmiss | 745 |