Year	per 100,000 population
2000	6.8
2001	6.4
2002	5.9
2003	6.4
2004	6.1
2005	6.7
2006	5.5
2007	5.2
2008	5.3
2009	6
2010	6.7
2011	5.7
2012	6.1
2013	5.2
2014	5.1
2015	4.5
2016	5.2
2017	5.1
2018	5.4
2019	5.3