Statistics by the author: Škvarna Dušan
| Year of reporting | Count |
|---|---|
| 1989 | 1 |
| 1993 | 1 |
| 1994 | 1 |
| 1998 | 2 |
| 2001 | 1 |
| 2003 | 3 |
| 2004 | 8 |
| 2005 | 10 |
| 2006 | 10 |
| 2007 | 11 |
| 2008 | 2 |
| 2009 | 22 |
| 2010 | 39 |
| 2011 | 5 |
| 2012 | 10 |
| 2013 | 8 |
| 2014 | 2 |
| 2015 | 7 |
| 2016 | 5 |
| 2017 | 6 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 1 |