Year per 100,000 adults 2004 2.88 2005 3.91 2006 3.67 2007 3.8 2008 3.74 2009 4.45 2010 4.725 2011 5.57 2012 5.505000000000001 2013 5.59 2014 5.545 2015 5.285 2016 5.1 2017 5.145 2018 5.24 2019 4.785 2020 4.5600000000000005 2021 5.52