| Value | Category | Cases | |
|---|---|---|---|
| 1960 | 34 | 
                                    
                                    2.2%
                                 | |
| 1962 | 1 | 
                                    
                                    0.1%
                                 | |
| 1963 | 3 | 
                                    
                                    0.2%
                                 | |
| 1965 | 3 | 
                                    
                                    0.2%
                                 | |
| 1966 | 3 | 
                                    
                                    0.2%
                                 | |
| 1970 | 11 | 
                                    
                                    0.7%
                                 | |
| 1972 | 4 | 
                                    
                                    0.3%
                                 | |
| 1973 | 1 | 
                                    
                                    0.1%
                                 | |
| 1975 | 10 | 
                                    
                                    0.6%
                                 | |
| 1976 | 5 | 
                                    
                                    0.3%
                                 | |
| 1978 | 10 | 
                                    
                                    0.6%
                                 | |
| 1979 | 11 | 
                                    
                                    0.7%
                                 | |
| 1980 | 33 | 
                                    
                                    2.1%
                                 | |
| 1981 | 4 | 
                                    
                                    0.3%
                                 | |
| 1982 | 9 | 
                                    
                                    0.6%
                                 | |
| 1983 | 14 | 
                                    
                                    0.9%
                                 | |
| 1985 | 20 | 
                                    
                                    1.3%
                                 | |
| 1986 | 12 | 
                                    
                                    0.8%
                                 | |
| 1987 | 5 | 
                                    
                                    0.3%
                                 | |
| 1988 | 5 | 
                                    
                                    0.3%
                                 | |
| 1989 | 2 | 
                                    
                                    0.1%
                                 | |
| 1990 | 25 | 
                                    
                                    1.6%
                                 | |
| 1991 | 3 | 
                                    
                                    0.2%
                                 | |
| 1992 | 10 | 
                                    
                                    0.6%
                                 | |
| 1993 | 6 | 
                                    
                                    0.4%
                                 | |
| 1994 | 2 | 
                                    
                                    0.1%
                                 | |
| 1995 | 19 | 
                                    
                                    1.2%
                                 | |
| 1996 | 3 | 
                                    
                                    0.2%
                                 | |
| 1997 | 8 | 
                                    
                                    0.5%
                                 | |
| 1998 | 30 | 
                                    
                                    1.9%
                                 | |
| 1999 | 15 | 
                                    
                                    1%
                                 | |
| 2000 | 112 | 
                                    
                                    7.1%
                                 | |
| 2001 | 42 | 
                                    
                                    2.7%
                                 | |
| 2002 | 28 | 
                                    
                                    1.8%
                                 | |
| 2003 | 49 | 
                                    
                                    3.1%
                                 | |
| 2004 | 25 | 
                                    
                                    1.6%
                                 | |
| 2005 | 49 | 
                                    
                                    3.1%
                                 | |
| 2006 | 38 | 
                                    
                                    2.4%
                                 | |
| 2007 | 29 | 
                                    
                                    1.8%
                                 | |
| 2008 | 38 | 
                                    
                                    2.4%
                                 | |
| 2009 | 32 | 
                                    
                                    2%
                                 | |
| 2010 | 73 | 
                                    
                                    4.6%
                                 | |
| 2011 | 30 | 
                                    
                                    1.9%
                                 | |
| 2012 | 37 | 
                                    
                                    2.3%
                                 | |
| 2013 | 70 | 
                                    
                                    4.4%
                                 | |
| 2014 | 46 | 
                                    
                                    2.9%
                                 | |
| 2015 | 87 | 
                                    
                                    5.5%
                                 | |
| 2016 | 78 | 
                                    
                                    5%
                                 | |
| 2017 | 69 | 
                                    
                                    4.4%
                                 | |
| 2018 | 64 | 
                                    
                                    4.1%
                                 | |
| 2019 | 91 | 
                                    
                                    5.8%
                                 | |
| 2020 | 72 | 
                                    
                                    4.6%
                                 | |
| 2021 | 41 | 
                                    
                                    2.6%
                                 | |
| 2022 | 38 | 
                                    
                                    2.4%
                                 | |
| 2023 | 16 | 
                                    
                                    1%
                                 |