| Value | Category | Cases | |
|---|---|---|---|
| 2002 | 1 |
0.2%
|
|
| 2004 | 3 |
0.6%
|
|
| 2006 | 1 |
0.2%
|
|
| 2007 | 1 |
0.2%
|
|
| 2009 | 2 |
0.4%
|
|
| 2010 | 4 |
0.8%
|
|
| 2011 | 5 |
1.1%
|
|
| 2012 | 18 |
3.8%
|
|
| 2013 | 68 |
14.3%
|
|
| 2014 | 216 |
45.5%
|
|
| 2015 | 156 |
32.8%
|
|
| Sysmiss | 717 |