| Value | Category | Cases | |
|---|---|---|---|
| 1999 | 1 | 
                                
                                0%
                             | |
| 2000 | 1 | 
                                
                                0%
                             | |
| 2004 | 3 | 
                                
                                0.1%
                             | |
| 2005 | 1 | 
                                
                                0%
                             | |
| 2006 | 3 | 
                                
                                0.1%
                             | |
| 2007 | 5 | 
                                
                                0.1%
                             | |
| 9995 | Missing | 3 | 
                                
                                0.1%
                             | 
| 9999 | N/A | 5272 | 
                                
                                99.7%
                             |