Year of reporting	Count
2001	2
2002	3
2003	1
2004	5
2005	12
2006	6
2007	13
2008	5
2009	6
2010	16
2011	7
2012	6
2013	12
2014	9
2015	9
2016	6
2017	6
2018	5
2019	5
2020	2
2021	2

Statistics by the author: Kráľ Pavol