| Value | Category | Cases | |
|---|---|---|---|
| 1997 | 6 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 1998 | 27 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 1999 | 90 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    |
| 2000 | 282 | 
                                                                 
                                    
                                    4.7%
                                 
                                                             | 
                                                        
                    |
| 2001 | 457 | 
                                                                 
                                    
                                    7.6%
                                 
                                                             | 
                                                        
                    |
| 2002 | 449 | 
                                                                 
                                    
                                    7.5%
                                 
                                                             | 
                                                        
                    |
| 2003 | 473 | 
                                                                 
                                    
                                    7.9%
                                 
                                                             | 
                                                        
                    |
| 2004 | 479 | 
                                                                 
                                    
                                    8%
                                 
                                                             | 
                                                        
                    |
| 2005 | 512 | 
                                                                 
                                    
                                    8.6%
                                 
                                                             | 
                                                        
                    |
| 2006 | 491 | 
                                                                 
                                    
                                    8.2%
                                 
                                                             | 
                                                        
                    |
| 2007 | 712 | 
                                                                 
                                    
                                    11.9%
                                 
                                                             | 
                                                        
                    |
| 2008 | 625 | 
                                                                 
                                    
                                    10.5%
                                 
                                                             | 
                                                        
                    |
| 3333 | Missing | 262 | 
                                                                 
                                    
                                    4.4%
                                 
                                                             | 
                                                        
                    
| 5555 | Not Applicable | 244 | 
                                                                 
                                    
                                    4.1%
                                 
                                                             | 
                                                        
                    
| 7777 | Never Moved | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 8888 | Refused | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 9999 | Don't know | 868 | 
                                                                 
                                    
                                    14.5%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 3627 |