| Value | Category | Cases | |
|---|---|---|---|
| 1983 | 3 | 
                                    
                                    0%
                                 | |
| 1984 | 9 | 
                                    
                                    0%
                                 | |
| 1985 | 18 | 
                                    
                                    0%
                                 | |
| 1986 | 45 | 
                                    
                                    0.1%
                                 | |
| 1987 | 91 | 
                                    
                                    0.2%
                                 | |
| 1988 | 142 | 
                                    
                                    0.4%
                                 | |
| 1989 | 198 | 
                                    
                                    0.5%
                                 | |
| 1990 | 276 | 
                                    
                                    0.7%
                                 | |
| 1991 | 290 | 
                                    
                                    0.8%
                                 | |
| 1992 | 370 | 
                                    
                                    1%
                                 | |
| 1993 | 362 | 
                                    
                                    1%
                                 | |
| 1994 | 342 | 
                                    
                                    0.9%
                                 | |
| 1995 | 406 | 
                                    
                                    1.1%
                                 | |
| 1996 | 442 | 
                                    
                                    1.2%
                                 | |
| 1997 | 442 | 
                                    
                                    1.2%
                                 | |
| 1998 | 464 | 
                                    
                                    1.2%
                                 | |
| 1999 | 526 | 
                                    
                                    1.4%
                                 | |
| 2000 | 519 | 
                                    
                                    1.4%
                                 | |
| 2001 | 535 | 
                                    
                                    1.4%
                                 | |
| 2002 | 590 | 
                                    
                                    1.6%
                                 | |
| 2003 | 660 | 
                                    
                                    1.8%
                                 | |
| 2004 | 712 | 
                                    
                                    1.9%
                                 | |
| 2005 | 742 | 
                                    
                                    2%
                                 | |
| 2006 | 747 | 
                                    
                                    2%
                                 | |
| 2007 | 833 | 
                                    
                                    2.2%
                                 | |
| 2008 | 887 | 
                                    
                                    2.4%
                                 | |
| 2009 | 885 | 
                                    
                                    2.4%
                                 | |
| 2010 | 977 | 
                                    
                                    2.6%
                                 | |
| 2011 | 897 | 
                                    
                                    2.4%
                                 | |
| 2012 | 954 | 
                                    
                                    2.6%
                                 | |
| 2013 | 1003 | 
                                    
                                    2.7%
                                 | |
| 2014 | 985 | 
                                    
                                    2.6%
                                 | |
| 2015 | 977 | 
                                    
                                    2.6%
                                 | |
| 2016 | 956 | 
                                    
                                    2.6%
                                 | |
| 2017 | 901 | 
                                    
                                    2.4%
                                 | |
| 2018 | 781 | 
                                    
                                    2.1%
                                 | |
| 2019 | 45 | 
                                    
                                    0.1%
                                 | |
| 9998 | NSP | 102 | 
                                    
                                    0.3%
                                 | 
| 9999 | NON REPONSE | 3 | 
                                    
                                    0%
                                 | 
| Sysmiss | 17110 | 
                                    
                                    46%
                                 |