Year	per 1,000 population at risk
2000	7.18718244411383
2001	4.70770948093863
2002	4.5498648502704
2003	3.87893262227648
2004	3.51700994376742
2005	4.7152459653167
2006	3.61569783708975
2007	1.74006544201212
2008	0.797944390638552
2009	0.769644228355719
2010	0.862382105589526
2011	0.711551186945608
2012	0.548304563834314
2013	0.62544689348636
2014	0.485896196926546
2015	0.536609171447127
2016	0.476240656917759
2017	0.386077896808697
2018	0.278368816906586
2019	0.188014232088857
2020	0.0946788863718326
2021	0.0957647169983351
2022	0.137780280984176