Year	per 100,000 population
2000	3.5
2001	3.1
2002	2.9
2003	3.3
2004	3.1
2005	3.7
2006	3.7
2007	3
2008	3.4
2009	3.6
2010	3.5
2011	4.4
2012	4.8
2013	5
2014	5.3
2015	5
2016	4.7
2017	5.1
2018	5.1
2019	5.1