Year per 1,000 population at risk 2000 348.900308123066 2001 348.570029139418 2002 341.429233783521 2003 330.830890312251 2004 316.667436550839 2005 308.519737417349 2006 297.697109303088 2007 283.132705451279 2008 276.990936421677 2009 276.760123030889 2010 281.256655699121 2011 286.911125104339 2012 281.708704601665 2013 277.803744650091 2014 269.680407630806 2015 265.435379205076 2016 259.627393739712 2017 270.734641956363 2018 274.525702842113 2019 293.60825661923 2020 283.13122093276 2021 270.451473501973 2022 255.16926163668