Year	per 100,000 population
2000	2.7
2001	2.6
2002	2.5
2003	2.4
2004	2.2
2005	2.3
2006	2.4
2007	2.4
2008	2.1
2009	2
2010	1.9
2011	1.7
2012	1.7
2013	1.8
2014	1.9
2015	2.1
2016	2
2017	1.9
2018	1.8
2019	1.9