| Value | Category | Cases | |
|---|---|---|---|
| 1 | 827 |
34.9%
|
|
| 1960 | 2 |
0.1%
|
|
| 1970 | 6 |
0.3%
|
|
| 1977 | 8 |
0.3%
|
|
| 1978 | 12 |
0.5%
|
|
| 1980 | 6 |
0.3%
|
|
| 1981 | 15 |
0.6%
|
|
| 1982 | 14 |
0.6%
|
|
| 1983 | 8 |
0.3%
|
|
| 1984 | 2 |
0.1%
|
|
| 1985 | 13 |
0.5%
|
|
| 1986 | 10 |
0.4%
|
|
| 1987 | 1 |
0%
|
|
| 1988 | 20 |
0.8%
|
|
| 1989 | 16 |
0.7%
|
|
| 1990 | 9 |
0.4%
|
|
| 1992 | 18 |
0.8%
|
|
| 1993 | 13 |
0.5%
|
|
| 1994 | 32 |
1.3%
|
|
| 1995 | 17 |
0.7%
|
|
| 1996 | 7 |
0.3%
|
|
| 1997 | 19 |
0.8%
|
|
| 1998 | 25 |
1.1%
|
|
| 1999 | 15 |
0.6%
|
|
| 2000 | 40 |
1.7%
|
|
| 2001 | 16 |
0.7%
|
|
| 2002 | 26 |
1.1%
|
|
| 2003 | 35 |
1.5%
|
|
| 2004 | 44 |
1.9%
|
|
| 2005 | 18 |
0.8%
|
|
| 2006 | 34 |
1.4%
|
|
| 2007 | 50 |
2.1%
|
|
| 2008 | 55 |
2.3%
|
|
| 2009 | 90 |
3.8%
|
|
| 2010 | 131 |
5.5%
|
|
| 2011 | 108 |
4.6%
|
|
| 2012 | 208 |
8.8%
|
|
| 2013 | 216 |
9.1%
|
|
| 2014 | 142 |
6%
|
|
| 2015 | 44 |
1.9%
|