Year of reporting	Count
1999	1
2000	3
2001	2
2002	1
2005	3
2007	1
2008	3
2009	7
2010	8
2011	2
2012	2
2013	10
2014	16
2015	9
2016	2
2017	1
2018	1
2019	1
2021	2

Statistics by the author: Vallová Elena