Year per 100,000 adults 2009 38.35 2010 37.54 2011 35.4 2012 34.77 2013 34.18 2014 30.82 2015 28.99 2016 25.91 2017 25.6 2018 23.99 2019 23.75 2020 20.91 2021 19.41