Year	per 100,000 population
2000	2.4
2001	2.2
2002	1.8
2003	1.4
2004	2.6
2005	2.5
2006	2.5
2007	2.4
2008	2.4
2009	2.3
2010	2
2011	2.2
2012	2.3
2013	2.3
2014	2.3
2015	1.8
2016	1.9
2017	1.8
2018	1.7
2019	1.7