| Value | Category | Cases | |
|---|---|---|---|
| 1993 | 1 |
0.2%
|
|
| 1999 | 1 |
0.2%
|
|
| 2000 | 2 |
0.4%
|
|
| 2002 | 1 |
0.2%
|
|
| 2003 | 18 |
3.2%
|
|
| 2004 | 3 |
0.5%
|
|
| 2005 | 8 |
1.4%
|
|
| 2006 | 8 |
1.4%
|
|
| 2007 | 8 |
1.4%
|
|
| 2008 | 27 |
4.7%
|
|
| 2009 | 47 |
8.2%
|
|
| 2010 | 26 |
4.6%
|
|
| 2011 | 50 |
8.8%
|
|
| 2012 | 44 |
7.7%
|
|
| 2013 | 50 |
8.8%
|
|
| 2014 | 35 |
6.1%
|
|
| 2015 | 26 |
4.6%
|
|
| 2016 | 67 |
11.7%
|
|
| 2017 | 67 |
11.7%
|
|
| 2018 | 43 |
7.5%
|
|
| 2019 | 25 |
4.4%
|
|
| 2020 | 7 |
1.2%
|
|
| 2021 | 7 |
1.2%
|