| Value | Category | Cases | |
|---|---|---|---|
| -95 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 2000 | 1 | 
                                    
                                    0.6%
                                 | |
| 2005 | 5 | 
                                    
                                    3%
                                 | |
| 2006 | 29 | 
                                    
                                    17.7%
                                 | |
| 2007 | 17 | 
                                    
                                    10.4%
                                 | |
| 2008 | 32 | 
                                    
                                    19.5%
                                 | |
| 2009 | 17 | 
                                    
                                    10.4%
                                 | |
| 2010 | 54 | 
                                    
                                    32.9%
                                 | |
| 2011 | 9 | 
                                    
                                    5.5%
                                 | |
| Sysmiss | 46 |