| Value | Category | Cases | |
|---|---|---|---|
| 2001 | 1 |
0.3%
|
|
| 2004 | 2 |
0.6%
|
|
| 2005 | 3 |
0.9%
|
|
| 2006 | 3 |
0.9%
|
|
| 2008 | 3 |
0.9%
|
|
| 2009 | 3 |
0.9%
|
|
| 2010 | 15 |
4.7%
|
|
| 2011 | 20 |
6.3%
|
|
| 2012 | 29 |
9.1%
|
|
| 2013 | 41 |
12.9%
|
|
| 2014 | 58 |
18.2%
|
|
| 2015 | 126 |
39.6%
|
|
| 2016 | 14 |
4.4%
|
|
| Sysmiss | 21 |