| Value | Category | Cases | |
|---|---|---|---|
| 1999 | 1 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    |
| 2000 | 23 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 2001 | 80 | 
                                                                 
                                    
                                    3.6%
                                 
                                                             | 
                                                        
                    |
| 2002 | 124 | 
                                                                 
                                    
                                    5.6%
                                 
                                                             | 
                                                        
                    |
| 2003 | 139 | 
                                                                 
                                    
                                    6.3%
                                 
                                                             | 
                                                        
                    |
| 2004 | 135 | 
                                                                 
                                    
                                    6.1%
                                 
                                                             | 
                                                        
                    |
| 2005 | 146 | 
                                                                 
                                    
                                    6.6%
                                 
                                                             | 
                                                        
                    |
| 2006 | 117 | 
                                                                 
                                    
                                    5.3%
                                 
                                                             | 
                                                        
                    |
| 2007 | 92 | 
                                                                 
                                    
                                    4.2%
                                 
                                                             | 
                                                        
                    |
| 2008 | 132 | 
                                                                 
                                    
                                    6%
                                 
                                                             | 
                                                        
                    |
| 2009 | 155 | 
                                                                 
                                    
                                    7%
                                 
                                                             | 
                                                        
                    |
| 2010 | 150 | 
                                                                 
                                    
                                    6.8%
                                 
                                                             | 
                                                        
                    |
| 2011 | 172 | 
                                                                 
                                    
                                    7.8%
                                 
                                                             | 
                                                        
                    |
| 2012 | 180 | 
                                                                 
                                    
                                    8.1%
                                 
                                                             | 
                                                        
                    |
| 2013 | 188 | 
                                                                 
                                    
                                    8.5%
                                 
                                                             | 
                                                        
                    |
| 2014 | 203 | 
                                                                 
                                    
                                    9.2%
                                 
                                                             | 
                                                        
                    |
| 2015 | 171 | 
                                                                 
                                    
                                    7.7%
                                 
                                                             | 
                                                        
                    |
| 2016 | 7 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 10192 |