Year	per 100,000 population
2000	5.5
2001	5.2
2002	5
2003	5.6
2004	5.4
2005	5.2
2006	4.6
2007	4.9
2008	5.1
2009	5
2010	4.8
2011	5.5
2012	4.4
2013	5.3
2014	4.5
2015	4.2
2016	4.4
2017	4.4
2018	4.5
2019	4.4