Year	per 1,000 population at risk
2000	3.11070777137825
2001	3.11120014632744
2002	3.11093762409532
2003	3.1104121916252
2004	3.11056941832841
2005	3.11036499443087
2006	3.11111530964729
2007	3.11022815018487
2008	3.11134538501389
2009	3.97481923895382
2010	1.46520146520147
2011	3.11017861108106
2012	3.11047640872722
2013	2.31085056865586
2014	12.725569104869
2015	12.5534545522009
2016	18.0123357524405
2017	18.9849645746458
2018	31.3377807881556
2019	61.3377799354117
2020	89.947879524763
2021	71.0620713611988
2022	48.359042812648