Year per 100,000 adults 2004 9.785 2005 9.59 2006 9.655 2007 9.73 2008 9.81 2009 9.645 2010 9.815 2011 9.285 2012 9.295 2013 9.055 2014 9.17 2015 9.030000000000001 2016 8.97 2017 9.379999999999999 2018 9.05 2019 8.995000000000001 2020 8.76 2021 8.66