Year of reporting	Count
1991	1
1995	2
1997	6
1998	8
1999	4
2000	6
2001	5
2002	3
2005	2
2006	6
2007	2
2008	1
2009	5
2010	4
2012	2
2013	4
2016	9
2017	2
2018	1

Statistics by the author: Čižmárová Katarína