| Value | Category | Cases | |
|---|---|---|---|
| 2002 | 1 | 
                                    
                                    1.5%
                                 | |
| 2004 | 1 | 
                                    
                                    1.5%
                                 | |
| 2006 | 1 | 
                                    
                                    1.5%
                                 | |
| 2008 | 1 | 
                                    
                                    1.5%
                                 | |
| 2009 | 2 | 
                                    
                                    2.9%
                                 | |
| 2010 | 4 | 
                                    
                                    5.9%
                                 | |
| 2011 | 1 | 
                                    
                                    1.5%
                                 | |
| 2012 | 4 | 
                                    
                                    5.9%
                                 | |
| 2013 | 2 | 
                                    
                                    2.9%
                                 | |
| 2014 | 2 | 
                                    
                                    2.9%
                                 | |
| 2015 | 2 | 
                                    
                                    2.9%
                                 | |
| 2016 | 2 | 
                                    
                                    2.9%
                                 | |
| 2017 | 7 | 
                                    
                                    10.3%
                                 | |
| 2018 | 17 | 
                                    
                                    25%
                                 | |
| 2019 | 21 | 
                                    
                                    30.9%
                                 | |
| Sysmiss | 3858 |