Statistics by the author: Čierna Helena
| Year of reporting | Count |
|---|---|
| 1997 | 1 |
| 1999 | 6 |
| 2000 | 2 |
| 2001 | 2 |
| 2002 | 4 |
| 2003 | 1 |
| 2005 | 6 |
| 2006 | 8 |
| 2007 | 6 |
| 2008 | 3 |
| 2009 | 9 |
| 2010 | 8 |
| 2011 | 5 |
| 2012 | 2 |
| 2014 | 1 |
| Year of reporting | Count |
|---|---|
| 1997 | 1 |
| 1999 | 6 |
| 2000 | 2 |
| 2001 | 2 |
| 2002 | 4 |
| 2003 | 1 |
| 2005 | 6 |
| 2006 | 8 |
| 2007 | 6 |
| 2008 | 3 |
| 2009 | 9 |
| 2010 | 8 |
| 2011 | 5 |
| 2012 | 2 |
| 2014 | 1 |