| Value | Category | Cases | |
|---|---|---|---|
| -95 | Missing | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 1992 | 1 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 2005 | 6 | 
                                                                 
                                    
                                    3.8%
                                 
                                                             | 
                                                        
                    |
| 2006 | 65 | 
                                                                 
                                    
                                    40.9%
                                 
                                                             | 
                                                        
                    |
| 2007 | 10 | 
                                                                 
                                    
                                    6.3%
                                 
                                                             | 
                                                        
                    |
| 2008 | 13 | 
                                                                 
                                    
                                    8.2%
                                 
                                                             | 
                                                        
                    |
| 2009 | 9 | 
                                                                 
                                    
                                    5.7%
                                 
                                                             | 
                                                        
                    |
| 2010 | 42 | 
                                                                 
                                    
                                    26.4%
                                 
                                                             | 
                                                        
                    |
| 2011 | 13 | 
                                                                 
                                    
                                    8.2%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 51 |