Year	per 1,000 population at risk
2000	53.6087643348802
2001	69.8341860539294
2002	46.9608062889255
2003	44.4392410258569
2004	68.5285139758725
2005	41.9139884879822
2006	43.2361129608138
2007	12.9417062659203
2008	7.4741981336135
2009	3.69682163505766
2010	1.55434568648067
2011	1.82683581638055
2012	3.17653329489331
2013	4.48272374043407
2014	14.4800385535239
2015	8.30732006693541
2016	17.3802706923477
2017	47.5025148546925
2018	26.2983972834887
2019	2.93765830785732
2020	10.2200664972433
2021	10.6169026946577
2022	8.29028767180433