Year	per 1,000 population at risk
2000	3.857985739169978
2001	3.66664017780909
2002	3.4286799642602888
2003	3.322459694447083
2004	3.0978636582675487
2005	3.220955861378518
2006	3.2922555777984095
2007	2.967435404654901
2008	2.658996933695538
2009	2.688311761255544
2010	3.5271599065613457
2011	3.17859461839872
2012	3.1799022710798677
2013	2.868017378545311
2014	2.4648620641697265
2015	2.342102281017749
2016	2.3598624810532898
2017	2.1192614754430097
2018	1.953937804293898
2019	1.9719898860521237
2020	1.9936040389205882
2022	2.3719494112880772