Year	per 1,000 population at risk
2000	31.7619223544766
2001	21.6162239363365
2002	17.2790649202484
2003	15.4413938129703
2004	13.4381338742393
2005	11.492984754606
2006	15.8246359509616
2007	14.5339793162464
2008	12.9814524280165
2009	14.6425160473536
2010	13.3015145722186
2011	9.09530662888687
2012	23.6033570688716
2013	19.9644616859649
2014	25.2081966704616
2015	17.6935548446685
2016	7.49116521056248
2017	4.01206392937845
2018	4.23425543482671
2019	2.80891840253258
2020	1.48980739631345
2021	1.65729525686912
2022	0.94771221811113