| Year | Number of Cases |
|---|---|
| 2000 | 3 |
| 2001 | 6 |
| 2002 | 5 |
| 2003 | 4 |
| 2004 | 2 |
| 2005 | 2 |
| 2006 | 6 |
| 2007 | 8 |
| 2008 | 7 |
| 2009 | 7 |
| 2010 | 10 |
| 2011 | 8 |
| 2012 | 4 |
| 2013 | 3 |
| 2014 | 1 |
| 2015 | 2 |
| 2017 | 4 |
| Year | Number of Cases |
|---|---|
| 2000 | 3 |
| 2001 | 6 |
| 2002 | 5 |
| 2003 | 4 |
| 2004 | 2 |
| 2005 | 2 |
| 2006 | 6 |
| 2007 | 8 |
| 2008 | 7 |
| 2009 | 7 |
| 2010 | 10 |
| 2011 | 8 |
| 2012 | 4 |
| 2013 | 3 |
| 2014 | 1 |
| 2015 | 2 |
| 2017 | 4 |