| Value | Category | Cases | |
|---|---|---|---|
| 1959 | 1 |
0%
|
|
| 1970 | 1 |
0%
|
|
| 1978 | 1 |
0%
|
|
| 1979 | 370 |
9.8%
|
|
| 1980 | 223 |
5.9%
|
|
| 1981 | 110 |
2.9%
|
|
| 1982 | 195 |
5.2%
|
|
| 1983 | 210 |
5.6%
|
|
| 1984 | 152 |
4%
|
|
| 1985 | 100 |
2.6%
|
|
| 1986 | 81 |
2.1%
|
|
| 1987 | 70 |
1.9%
|
|
| 1988 | 40 |
1.1%
|
|
| 1989 | 32 |
0.8%
|
|
| 1990 | 119 |
3.1%
|
|
| 1991 | 42 |
1.1%
|
|
| 1992 | 96 |
2.5%
|
|
| 1993 | 124 |
3.3%
|
|
| 1994 | 75 |
2%
|
|
| 1995 | 77 |
2%
|
|
| 1996 | 53 |
1.4%
|
|
| 1997 | 74 |
2%
|
|
| 1998 | 101 |
2.7%
|
|
| 1999 | 101 |
2.7%
|
|
| 2000 | 174 |
4.6%
|
|
| 2001 | 70 |
1.9%
|
|
| 2002 | 122 |
3.2%
|
|
| 2003 | 69 |
1.8%
|
|
| 2004 | 64 |
1.7%
|
|
| 2005 | 107 |
2.8%
|
|
| 2006 | 98 |
2.6%
|
|
| 2007 | 128 |
3.4%
|
|
| 2008 | 130 |
3.4%
|
|
| 2009 | 138 |
3.6%
|
|
| 2010 | 120 |
3.2%
|
|
| 2011 | 86 |
2.3%
|
|
| 2012 | 27 |
0.7%
|