Year	per 1,000 population at risk
2000	19.8653903851688
2001	19.9136702741235
2002	18.4079463182909
2003	19.3694372074758
2004	21.1559301179489
2005	22.5126690547836
2006	18.1072002760513
2007	17.2983697056009
2008	17.8286304026668
2009	18.0619903683883
2010	17.3928313067587
2011	14.7248510331224
2012	11.8076224704701
2013	9.0660691634983
2014	9.12990691921499
2015	9.65607170248285
2016	9.89384860767055
2017	7.39369231110793
2018	5.27451272271117
2019	4.29463190232564
2020	3.75363408787146
2021	3.63793125706123
2022	2.55957045879707