| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 3 |
2.8%
|
|
| 2001 | 2 |
1.8%
|
|
| 2003 | 2 |
1.8%
|
|
| 2004 | 2 |
1.8%
|
|
| 2005 | 5 |
4.6%
|
|
| 2006 | 2 |
1.8%
|
|
| 2007 | 7 |
6.4%
|
|
| 2008 | 8 |
7.3%
|
|
| 2009 | 6 |
5.5%
|
|
| 2010 | 18 |
16.5%
|
|
| 2011 | 7 |
6.4%
|
|
| 2012 | 12 |
11%
|
|
| 2013 | 11 |
10.1%
|
|
| 2014 | 11 |
10.1%
|
|
| 2015 | 12 |
11%
|
|
| 2016 | 1 |
0.9%
|
|
| Sysmiss | 230 |