Year per 100,000 adults 2004 26.98 2005 26.86 2006 26.35 2007 26.45 2008 26.45 2009 26.51 2010 26.29 2011 26 2012 24.86 2013 24 2014 23.55 2015 23.01 2016 22.56 2017 22.25 2018 22.27 2019 21.66 2020 20.32 2021 18.36