| Valor | Categoría | Casos | |
|---|---|---|---|
| 1960 | 2 | 
                                    
                                    0.4%
                                 | |
| 1962 | 1 | 
                                    
                                    0.2%
                                 | |
| 1970 | 1 | 
                                    
                                    0.2%
                                 | |
| 1972 | 2 | 
                                    
                                    0.4%
                                 | |
| 1974 | 1 | 
                                    
                                    0.2%
                                 | |
| 1975 | 1 | 
                                    
                                    0.2%
                                 | |
| 1977 | 2 | 
                                    
                                    0.4%
                                 | |
| 1980 | 2 | 
                                    
                                    0.4%
                                 | |
| 1981 | 1 | 
                                    
                                    0.2%
                                 | |
| 1982 | 6 | 
                                    
                                    1.2%
                                 | |
| 1983 | 1 | 
                                    
                                    0.2%
                                 | |
| 1984 | 2 | 
                                    
                                    0.4%
                                 | |
| 1985 | 1 | 
                                    
                                    0.2%
                                 | |
| 1986 | 1 | 
                                    
                                    0.2%
                                 | |
| 1987 | 7 | 
                                    
                                    1.4%
                                 | |
| 1988 | 1 | 
                                    
                                    0.2%
                                 | |
| 1989 | 3 | 
                                    
                                    0.6%
                                 | |
| 1990 | 7 | 
                                    
                                    1.4%
                                 | |
| 1991 | 4 | 
                                    
                                    0.8%
                                 | |
| 1992 | 10 | 
                                    
                                    2%
                                 | |
| 1993 | 6 | 
                                    
                                    1.2%
                                 | |
| 1994 | 4 | 
                                    
                                    0.8%
                                 | |
| 1995 | 9 | 
                                    
                                    1.8%
                                 | |
| 1996 | 5 | 
                                    
                                    1%
                                 | |
| 1997 | 11 | 
                                    
                                    2.2%
                                 | |
| 1998 | 22 | 
                                    
                                    4.4%
                                 | |
| 1999 | 4 | 
                                    
                                    0.8%
                                 | |
| 2000 | 21 | 
                                    
                                    4.2%
                                 | |
| 2001 | 4 | 
                                    
                                    0.8%
                                 | |
| 2002 | 21 | 
                                    
                                    4.2%
                                 | |
| 2003 | 16 | 
                                    
                                    3.2%
                                 | |
| 2004 | 16 | 
                                    
                                    3.2%
                                 | |
| 2005 | 25 | 
                                    
                                    5%
                                 | |
| 2006 | 27 | 
                                    
                                    5.4%
                                 | |
| 2007 | 36 | 
                                    
                                    7.3%
                                 | |
| 2008 | 32 | 
                                    
                                    6.5%
                                 | |
| 2009 | 39 | 
                                    
                                    7.9%
                                 | |
| 2010 | 58 | 
                                    
                                    11.7%
                                 | |
| 2011 | 28 | 
                                    
                                    5.6%
                                 | |
| 2012 | 45 | 
                                    
                                    9.1%
                                 | |
| 9999 | 11 | 
                                    
                                    2.2%
                                 |