Year per 100,000 adults 2004 1.12 2005 1.205 2006 1.34 2007 1.715 2008 2.2350000000000003 2009 2.84 2010 3.27 2011 3.29 2012 3.68 2013 3.855 2014 3.74 2015 3.65 2016 3.425 2017 3.37 2018 3.785 2019 4.36 2020 4.28 2021 4.12