| Value | Category | Cases | |
|---|---|---|---|
| 1983 | 1 |
0.1%
|
|
| 1984 | 2 |
0.2%
|
|
| 1992 | 1 |
0.1%
|
|
| 1994 | 1 |
0.1%
|
|
| 1995 | 3 |
0.2%
|
|
| 1998 | 2 |
0.2%
|
|
| 1999 | 3 |
0.2%
|
|
| 2000 | 13 |
1%
|
|
| 2001 | 13 |
1%
|
|
| 2002 | 13 |
1%
|
|
| 2003 | 7 |
0.5%
|
|
| 2004 | 13 |
1%
|
|
| 2005 | 48 |
3.7%
|
|
| 2006 | 14 |
1.1%
|
|
| 2007 | 49 |
3.8%
|
|
| 2008 | 58 |
4.5%
|
|
| 2009 | 82 |
6.4%
|
|
| 2010 | 156 |
12.1%
|
|
| 2011 | 123 |
9.6%
|
|
| 2012 | 172 |
13.4%
|
|
| 2013 | 256 |
19.9%
|
|
| 2014 | 182 |
14.2%
|
|
| 2015 | 72 |
5.6%
|
|
| Sysmiss | 8374 |