| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 1 |
0.3%
|
|
| 2001 | 2 |
0.6%
|
|
| 2003 | 1 |
0.3%
|
|
| 2005 | 2 |
0.6%
|
|
| 2006 | 1 |
0.3%
|
|
| 2007 | 4 |
1.3%
|
|
| 2008 | 1 |
0.3%
|
|
| 2009 | 12 |
3.8%
|
|
| 2010 | 26 |
8.2%
|
|
| 2011 | 33 |
10.4%
|
|
| 2012 | 50 |
15.8%
|
|
| 2013 | 71 |
22.5%
|
|
| 2014 | 96 |
30.4%
|
|
| 2015 | 16 |
5.1%
|
|
| Sysmiss | 876 |