| Value | Category | Cases | |
|---|---|---|---|
| 1983 | 1 |
0%
|
|
| 1985 | 1 |
0%
|
|
| 1986 | 1 |
0%
|
|
| 1987 | 5 |
0.1%
|
|
| 1988 | 1 |
0%
|
|
| 1989 | 7 |
0.2%
|
|
| 1990 | 3 |
0.1%
|
|
| 1991 | 35 |
1%
|
|
| 1992 | 5 |
0.1%
|
|
| 1993 | 2 |
0.1%
|
|
| 1994 | 2 |
0.1%
|
|
| 1995 | 2 |
0.1%
|
|
| 1996 | 8 |
0.2%
|
|
| 1997 | 44 |
1.2%
|
|
| 1998 | 3 |
0.1%
|
|
| 1999 | 11 |
0.3%
|
|
| 2000 | 27 |
0.7%
|
|
| 2001 | 12 |
0.3%
|
|
| 2002 | 11 |
0.3%
|
|
| 2003 | 7 |
0.2%
|
|
| 2004 | 6 |
0.2%
|
|
| 2005 | 8 |
0.2%
|
|
| 2006 | 5 |
0.1%
|
|
| 2007 | 22 |
0.6%
|
|
| 2008 | 46 |
1.3%
|
|
| 2009 | 190 |
5.3%
|
|
| 2010 | 195 |
5.4%
|
|
| 2011 | 1068 |
29.5%
|
|
| 2012 | 311 |
8.6%
|
|
| 2013 | 265 |
7.3%
|
|
| 2014 | 566 |
15.6%
|
|
| 2015 | 273 |
7.5%
|
|
| 2016 | 206 |
5.7%
|
|
| 2017 | 270 |
7.5%
|