Year of reporting	Count
1998	11
1999	11
2000	8
2001	5
2002	8
2004	8
2005	10
2006	10
2007	4
2008	10
2009	6
2010	11
2011	3
2012	9
2013	13
2014	8
2015	2
2016	4

Statistics by the author: Riečan Beloslav