Year of reporting	Count
1997	3
1999	4
2000	2
2001	2
2002	5
2003	3
2004	7
2005	7
2006	3
2007	7
2008	10
2009	11
2010	11
2011	8
2012	7
2013	2
2014	1
2016	1

Statistics by the author: Oravcová Jitka