Year of reporting	Count
1998	1
1999	1
2000	2
2003	5
2004	4
2005	6
2006	2
2007	2
2008	2
2009	13
2010	2
2011	11
2012	2
2013	5
2015	3
2016	8
2017	6
2019	4
2020	4
2021	2
2022	3
2023	5
2024	1

Statistics by the author: Hruška Martin