| Value | Category | Cases | |
|---|---|---|---|
| 0 | 26 | 
                                    
                                    2.7%
                                 | |
| 2000 | 1 | 
                                    
                                    0.1%
                                 | |
| 2003 | 1 | 
                                    
                                    0.1%
                                 | |
| 2004 | 1 | 
                                    
                                    0.1%
                                 | |
| 2005 | 1 | 
                                    
                                    0.1%
                                 | |
| 2006 | 1 | 
                                    
                                    0.1%
                                 | |
| 2007 | 1 | 
                                    
                                    0.1%
                                 | |
| 2008 | 1 | 
                                    
                                    0.1%
                                 | |
| 2010 | 3 | 
                                    
                                    0.3%
                                 | |
| 2011 | 1 | 
                                    
                                    0.1%
                                 | |
| 2012 | 2 | 
                                    
                                    0.2%
                                 | |
| 2013 | 8 | 
                                    
                                    0.8%
                                 | |
| 2014 | 8 | 
                                    
                                    0.8%
                                 | |
| 2015 | 37 | 
                                    
                                    3.8%
                                 | |
| 2016 | 77 | 
                                    
                                    8%
                                 | |
| 2017 | 151 | 
                                    
                                    15.7%
                                 | |
| 2018 | 183 | 
                                    
                                    19%
                                 | |
| 2019 | 335 | 
                                    
                                    34.8%
                                 | |
| 2020 | 124 | 
                                    
                                    12.9%
                                 | |
| Sysmiss | 22 |