| Value | Category | Cases | |
|---|---|---|---|
| 2001 | 2 |
0.3%
|
|
| 2002 | 47 |
6.6%
|
|
| 2003 | 6 |
0.8%
|
|
| 2004 | 16 |
2.3%
|
|
| 2005 | 8 |
1.1%
|
|
| 2006 | 17 |
2.4%
|
|
| 2007 | 2 |
0.3%
|
|
| 2008 | 9 |
1.3%
|
|
| 2009 | 5 |
0.7%
|
|
| 2010 | 9 |
1.3%
|
|
| 2011 | 12 |
1.7%
|
|
| 2012 | 17 |
2.4%
|
|
| 2013 | 2 |
0.3%
|
|
| 2014 | 2 |
0.3%
|
|
| 2015 | 10 |
1.4%
|
|
| 2016 | 109 |
15.4%
|
|
| 2017 | 45 |
6.3%
|
|
| 2018 | 54 |
7.6%
|
|
| 2019 | 2 |
0.3%
|
|
| Missing value | 336 |
47.3%
|