| Value | Category | Cases | |
|---|---|---|---|
| 2003 | 4 |
1.1%
|
|
| 2004 | 1 |
0.3%
|
|
| 2005 | 4 |
1.1%
|
|
| 2006 | 7 |
1.9%
|
|
| 2007 | 6 |
1.6%
|
|
| 2008 | 9 |
2.4%
|
|
| 2009 | 8 |
2.1%
|
|
| 2010 | 13 |
3.4%
|
|
| 2011 | 17 |
4.5%
|
|
| 2012 | 23 |
6.1%
|
|
| 2013 | 24 |
6.4%
|
|
| 2014 | 24 |
6.4%
|
|
| 2015 | 43 |
11.4%
|
|
| 2016 | 52 |
13.8%
|
|
| 2017 | 84 |
22.3%
|
|
| 2018 | 39 |
10.3%
|
|
| 2019 | 18 |
4.8%
|
|
| 2020 | 1 |
0.3%
|