| Value | Category | Cases | |
|---|---|---|---|
| -5 | Missing; Unknown; Inappropiate | 0 | 
                                    
                                    0%
                                 | 
| -4 | Not asked | 0 | 
                                    
                                    0%
                                 | 
| -3 | Not applicable | 0 | 
                                    
                                    0%
                                 | 
| -2 | No answer | 0 | 
                                    
                                    0%
                                 | 
| -1 | Don´t know | 0 | 
                                    
                                    0%
                                 | 
| 1989 | 1989 | 938 | 
                                    
                                    100%
                                 | 
| 1990 | 1990 | 0 | 
                                    
                                    0%
                                 | 
| 1991 | 1991 | 0 | 
                                    
                                    0%
                                 | 
| 1992 | 1992 | 0 | 
                                    
                                    0%
                                 | 
| 1993 | 1993 | 0 | 
                                    
                                    0%
                                 | 
| 1994 | 1994 | 0 | 
                                    
                                    0%
                                 |