Year	per 1,000 population at risk
2000	5.886695237529973
2001	5.53547522155874
2002	5.183732941108925
2003	5.234769303185215
2004	5.63743584981265
2005	5.2122132238035555
2006	5.133094347248776
2007	4.560496341178268
2008	4.680780520180945
2009	5.084637100469504
2010	5.205613791740569
2011	4.494908757669395
2012	5.1182923072368425
2013	3.765972085665577
2014	3.4094920000663316
2015	2.416653789175738
2016	2.542277875429781
2017	2.2588423525132533
2018	2.2605706239841163
2019	2.082108888411452
2020	2.2643039237868625
2022	3.2275641695400115