| Value | Category | Cases | |
|---|---|---|---|
| 1985 | 1 | 
                                    
                                    0%
                                 | |
| 1986 | 1 | 
                                    
                                    0%
                                 | |
| 1989 | 1 | 
                                    
                                    0%
                                 | |
| 1995 | 1 | 
                                    
                                    0%
                                 | |
| 1998 | 2 | 
                                    
                                    0%
                                 | |
| 1999 | 1 | 
                                    
                                    0%
                                 | |
| 2000 | 8 | 
                                    
                                    0.2%
                                 | |
| 2001 | 1 | 
                                    
                                    0%
                                 | |
| 2002 | 1 | 
                                    
                                    0%
                                 | |
| 2003 | 3 | 
                                    
                                    0.1%
                                 | |
| 2004 | 2 | 
                                    
                                    0%
                                 | |
| 2005 | 3 | 
                                    
                                    0.1%
                                 | |
| 2006 | 1 | 
                                    
                                    0%
                                 | |
| 2007 | 1 | 
                                    
                                    0%
                                 | |
| 2008 | 5 | 
                                    
                                    0.1%
                                 | |
| 2009 | 12 | 
                                    
                                    0.3%
                                 | |
| 2010 | 65 | 
                                    
                                    1.4%
                                 | |
| 2011 | 285 | 
                                    
                                    6%
                                 | |
| 2012 | 710 | 
                                    
                                    14.9%
                                 | |
| 2013 | 1328 | 
                                    
                                    27.9%
                                 | |
| 2014 | 1669 | 
                                    
                                    35%
                                 | |
| 2015 | 667 | 
                                    
                                    14%
                                 | |
| 9999 | 9999. MISSING | 500 | |
| Sysmiss | 26871 |