| Value | Category | Cases | |
|---|---|---|---|
| 1980 | 1 | 
                                    
                                    0%
                                 | |
| 1982 | 3 | 
                                    
                                    0%
                                 | |
| 1983 | 2 | 
                                    
                                    0%
                                 | |
| 1984 | 6 | 
                                    
                                    0.1%
                                 | |
| 1985 | 21 | 
                                    
                                    0.3%
                                 | |
| 1986 | 35 | 
                                    
                                    0.4%
                                 | |
| 1987 | 44 | 
                                    
                                    0.5%
                                 | |
| 1988 | 70 | 
                                    
                                    0.9%
                                 | |
| 1989 | 63 | 
                                    
                                    0.8%
                                 | |
| 1990 | 82 | 
                                    
                                    1%
                                 | |
| 1991 | 76 | 
                                    
                                    0.9%
                                 | |
| 1992 | 71 | 
                                    
                                    0.9%
                                 | |
| 1993 | 104 | 
                                    
                                    1.3%
                                 | |
| 1994 | 107 | 
                                    
                                    1.3%
                                 | |
| 1995 | 96 | 
                                    
                                    1.2%
                                 | |
| 1996 | 92 | 
                                    
                                    1.1%
                                 | |
| 1997 | 102 | 
                                    
                                    1.2%
                                 | |
| 1998 | 147 | 
                                    
                                    1.8%
                                 | |
| 1999 | 132 | 
                                    
                                    1.6%
                                 | |
| 2000 | 196 | 
                                    
                                    2.4%
                                 | |
| 2001 | 129 | 
                                    
                                    1.6%
                                 | |
| 2002 | 142 | 
                                    
                                    1.7%
                                 | |
| 2003 | 153 | 
                                    
                                    1.9%
                                 | |
| 2004 | 134 | 
                                    
                                    1.6%
                                 | |
| 2005 | 176 | 
                                    
                                    2.1%
                                 | |
| 2006 | 228 | 
                                    
                                    2.8%
                                 | |
| 2007 | 178 | 
                                    
                                    2.2%
                                 | |
| 2008 | 256 | 
                                    
                                    3.1%
                                 | |
| 2009 | 218 | 
                                    
                                    2.7%
                                 | |
| 2010 | 258 | 
                                    
                                    3.1%
                                 | |
| 2011 | 240 | 
                                    
                                    2.9%
                                 | |
| 2012 | 264 | 
                                    
                                    3.2%
                                 | |
| 2013 | 276 | 
                                    
                                    3.4%
                                 | |
| 2014 | 251 | 
                                    
                                    3.1%
                                 | |
| 2015 | 251 | 
                                    
                                    3.1%
                                 | |
| 2016 | 181 | 
                                    
                                    2.2%
                                 | |
| 2017 | 168 | 
                                    
                                    2%
                                 | |
| 2018 | 36 | 
                                    
                                    0.4%
                                 | |
| 9998 | NO SABE | 580 | 
                                    
                                    7.1%
                                 | 
| 9999 | NO RESPONDE | 7 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 2641 | 
                                    
                                    32.1%
                                 |