Year per 100,000 adults 2004 9.68 2005 11.7 2006 13.83 2007 18.61 2008 23.5 2009 24.01 2010 24.13 2011 24.11 2012 24.06 2013 23.49 2014 22.07 2015 22.02 2016 21.68 2017 20.72 2018 19.54 2019 18.71 2020 18.61 2021 18.57