Year per 1,000 population at risk 2000 6.08788283111522 2001 6.62993470711475 2002 6.02051804011869 2003 5.63661811934033 2004 4.07459497484025 2005 4.93020493609549 2006 4.86171840653761 2007 4.67089454643632 2008 4.17852988300702 2009 5.4340588899696 2010 7.5623936683549 2011 9.76160949080564 2012 8.31314965754492 2013 6.84110068461287 2014 4.85800468930796 2015 4.82309520575931 2016 4.84586874965513 2017 3.85447887776422 2018 3.26603242260572 2019 2.91715828058597 2020 2.43007028721959 2021 2.22256674942206 2022 11.4518486577195