| Value | Category | Cases | |
|---|---|---|---|
| 1991 | 1 | 
                                
                                0%
                             | |
| 1996 | 1 | 
                                
                                0%
                             | |
| 1997 | 1 | 
                                
                                0%
                             | |
| 1998 | 2 | 
                                
                                0%
                             | |
| 1999 | 1 | 
                                
                                0%
                             | |
| 2001 | 2 | 
                                
                                0%
                             | |
| 2002 | 10 | 
                                
                                0.2%
                             | |
| 2003 | 9 | 
                                
                                0.2%
                             | |
| 2004 | 9 | 
                                
                                0.2%
                             | |
| 2005 | 26 | 
                                
                                0.5%
                             | |
| 2006 | 69 | 
                                
                                1.3%
                             | |
| 2007 | 66 | 
                                
                                1.2%
                             | |
| 9995 | 9995.Missing | 2 | 
                                
                                0%
                             | 
| 9998 | 9998.Dont Know | 1 | 
                                
                                0%
                             | 
| 9999 | 9999.Not Applicable | 5089 | 
                                
                                96.2%
                             |