Year	per 100,000 population
2000	8.3
2001	7
2002	8
2003	19.1
2004	18.8
2005	10.8
2006	18
2007	6.2
2008	2
2009	5
2010	5.8
2011	1.9
2012	5.6
2013	0.9
2014	4.6
2015	3.6
2016	4.4
2017	2.4
2018	2.1
2019	1.9