Year	per 1,000 population at risk
2000	14.25559314165109
2001	11.773438236637123
2002	10.470538021959428
2003	9.975960534673067
2004	9.54308298281675
2005	10.452133003018478
2006	9.076172119716198
2007	8.055283008870429
2008	5.529591842219374
2009	5.331099266068613
2010	6.154281711787488
2011	4.34829592897956
2012	3.939844283192715
2013	3.4528607764191706
2014	2.7770551050161902
2015	3.1303569961440574
2016	3.031200915076437
2017	3.3866004460277717
2018	3.228076156770121
2019	3.033787103831064
2020	2.9752516974749814
2021	2.725482020851204
2022	2.6726813416879525