| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 4 |
2%
|
|
| 2001 | 4 |
2%
|
|
| 2002 | 1 |
0.5%
|
|
| 2003 | 13 |
6.4%
|
|
| 2004 | 4 |
2%
|
|
| 2005 | 5 |
2.5%
|
|
| 2006 | 16 |
7.9%
|
|
| 2007 | 17 |
8.4%
|
|
| 2008 | 19 |
9.4%
|
|
| 2009 | 25 |
12.4%
|
|
| 2010 | 21 |
10.4%
|
|
| 2011 | 24 |
11.9%
|
|
| 2012 | 27 |
13.4%
|
|
| 2013 | 18 |
8.9%
|
|
| 2014 | 2 |
1%
|
|
| 2016 | 2 |
1%
|