Year of reporting	Count
1995	2
1996	3
1997	1
1998	4
1999	5
2000	7
2001	6
2002	7
2003	2
2004	5
2005	6
2006	2
2007	11
2008	4
2009	7
2010	7
2011	1
2012	12
2013	10
2014	6
2015	4
2016	5
2017	2

Statistics by the author: Paugschová Božena