Year	per 1,000 population at risk
2000	8.06805061031729
2001	8.784099659789963
2002	9.465472318445453
2003	8.495575892397563
2004	6.665553030327286
2005	6.879097169522918
2006	8.01849620696609
2007	5.583940212606997
2008	3.4565820329928716
2009	4.369321089161806
2010	6.852038159060109
2011	4.711611474939825
2012	5.018209908362384
2013	4.02823472602249
2014	3.3850834307476876
2015	2.927854918774839
2016	3.7154749017870894
2017	4.122651199493274
2018	4.759568212984966
2019	4.5899467788445625
2020	4.469314229514749
2021	5.223861778247433
2022	4.59873281733573