Year	per 1,000 population at risk
2000	1.11897284994155
2001	0.88249854710605
2002	1.73308317127307
2003	1.27448688026634
2004	0.648178849162757
2005	0.661551021434777
2006	0.645199573641111
2007	0.724539419275404
2008	0.49802806249791
2009	0.424894079065972
2010	0.493654248316961
2011	0.294876958011415
2012	0.277678771772869
2013	0.248239436619718
2014	0.104320877980558
2015	0.0737051281059977
2016	0.0626599559130977
2017	0.0761160066586234
2018	0.0595499665288119
2019	0.0156448284765496
2020	0.00856479194712449
2021	0.00366863301574818
2022	0.00405795709589595