Year of reporting	Count
1997	2
1998	1
1999	1
2000	2
2001	1
2002	3
2003	2
2004	5
2006	5
2007	2
2008	10
2009	2
2010	2
2011	5
2012	4
2013	4
2014	5
2015	3
2016	6
2017	4
2018	5
2019	2
2020	3
2021	6
2022	3

Statistics by the author: Krišková Zdena