| Value | Category | Cases | |
|---|---|---|---|
| 1994 | 418 | 
                                                                 
                                    
                                    10.2%
                                 
                                                             | 
                                                        
                    |
| 1995 | 999 | 
                                                                 
                                    
                                    24.5%
                                 
                                                             | 
                                                        
                    |
| 1996 | 971 | 
                                                                 
                                    
                                    23.8%
                                 
                                                             | 
                                                        
                    |
| 1997 | 672 | 
                                                                 
                                    
                                    16.5%
                                 
                                                             | 
                                                        
                    |
| 1998 | 396 | 
                                                                 
                                    
                                    9.7%
                                 
                                                             | 
                                                        
                    |
| 1999 | 463 | 
                                                                 
                                    
                                    11.3%
                                 
                                                             | 
                                                        
                    |
| 2000 | 162 | 
                                                                 
                                    
                                    4%
                                 
                                                             | 
                                                        
                    |
| 9997 | inconsistent | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 9998 | dk | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 11904 |