| Value | Category | Cases | |
|---|---|---|---|
| 1996 | 1 | 
                                
                                0%
                             | |
| 2003 | 1 | 
                                
                                0%
                             | |
| 2005 | 1 | 
                                
                                0%
                             | |
| 2006 | 1 | 
                                
                                0%
                             | |
| 2007 | 2 | 
                                
                                0%
                             | |
| 9995 | Missing | 0 | 
                                
                                0%
                             | 
| 9999 | N/A | 5283 | 
                                
                                99.9%
                             |