Year	per 1,000 population at risk
2000	8.54077866069087
2001	5.71626098247035
2002	3.97113718799893
2003	3.17408100574802
2004	3.79088172801885
2005	3.42497240962016
2006	2.45424412616337
2007	2.08443130982448
2008	1.59989883613866
2009	1.72055516580016
2010	1.73850451772111
2011	1.3148083086564
2012	1.08988732724721
2013	0.890894335447159
2014	0.550677176904408
2015	0.569191308857315
2016	0.644021475939922
2017	0.196789148798629
2018	0.10518171578773
2019	0.0492200888466946
2020	0.119760583541624
2021	0.166700250179267
2022	0.375023121487597