| Value | Category | Cases | |
|---|---|---|---|
| -95 | Missing | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 2005 | 9 | 
                                                                 
                                    
                                    5.7%
                                 
                                                             | 
                                                        
                    |
| 2006 | 29 | 
                                                                 
                                    
                                    18.4%
                                 
                                                             | 
                                                        
                    |
| 2007 | 15 | 
                                                                 
                                    
                                    9.5%
                                 
                                                             | 
                                                        
                    |
| 2008 | 33 | 
                                                                 
                                    
                                    20.9%
                                 
                                                             | 
                                                        
                    |
| 2009 | 21 | 
                                                                 
                                    
                                    13.3%
                                 
                                                             | 
                                                        
                    |
| 2010 | 40 | 
                                                                 
                                    
                                    25.3%
                                 
                                                             | 
                                                        
                    |
| 2011 | 11 | 
                                                                 
                                    
                                    7%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 52 |