Year per 100,000 adults 2004 1.82 2005 1.9699999999999998 2006 1.935 2007 2.21 2008 2.51 2009 2.87 2010 3.3449999999999998 2011 3.685 2012 3.765 2013 4.13 2014 4.12 2015 4.8 2016 4.775 2017 4.7 2018 4.82 2019 4.78 2020 4.5600000000000005 2021 4.335