| Value | Category | Cases | |
|---|---|---|---|
| 1999 | 1 |
1.4%
|
|
| 2002 | 1 |
1.4%
|
|
| 2003 | 2 |
2.8%
|
|
| 2004 | 1 |
1.4%
|
|
| 2005 | 1 |
1.4%
|
|
| 2006 | 5 |
6.9%
|
|
| 2007 | 1 |
1.4%
|
|
| 2008 | 1 |
1.4%
|
|
| 2009 | 1 |
1.4%
|
|
| 2010 | 2 |
2.8%
|
|
| 2011 | 1 |
1.4%
|
|
| 2012 | 3 |
4.2%
|
|
| 2013 | 3 |
4.2%
|
|
| 2014 | 2 |
2.8%
|
|
| 2015 | 5 |
6.9%
|
|
| 2016 | 3 |
4.2%
|
|
| 2017 | 21 |
29.2%
|
|
| 2018 | 11 |
15.3%
|
|
| 9999 | 7 |
9.7%
|
|
| Sysmiss | 2566 |