| Value | Category | Cases | |
|---|---|---|---|
| 1998 | 1 |
0.1%
|
|
| 2002 | 1 |
0.1%
|
|
| 2003 | 2 |
0.1%
|
|
| 2006 | 4 |
0.2%
|
|
| 2007 | 7 |
0.4%
|
|
| 2008 | 6 |
0.3%
|
|
| 2009 | 5 |
0.3%
|
|
| 2010 | 24 |
1.2%
|
|
| 2011 | 14 |
0.7%
|
|
| 2012 | 17 |
0.9%
|
|
| 2013 | 40 |
2.1%
|
|
| 2014 | 51 |
2.7%
|
|
| 2015 | 96 |
5%
|
|
| 2016 | 130 |
6.8%
|
|
| 2017 | 612 |
31.8%
|
|
| 2018 | 913 |
47.5%
|
|
| Sysmiss | 16573 |