Year per 100,000 adults 2004 4.39 2005 4.045 2006 3.78 2007 4.21 2008 4.555 2009 4.59 2010 5.1 2011 5.83 2012 5.82 2013 6.6 2014 6.8 2015 6.86 2016 6.98 2017 7.26 2018 7.84 2019 7.96 2020 7.16 2021 8.095