Year	per 100,000 population
2000	3
2001	3.3
2002	3.3
2003	3.3
2004	3.4
2005	3.2
2006	3.1
2007	3.1
2008	3.1
2009	2.9
2010	3
2011	2.9
2012	3
2013	3.1
2014	3.1
2015	3.1
2016	2.9
2017	2.7
2018	2.9
2019	2.8