Year per 1,000 adults 2004 16.25 2005 11.33 2006 13.49 2007 18.45 2008 21.76 2009 23.64 2010 26.2 2011 30.4 2012 34.94 2013 40.95 2014 50.31 2015 49.88 2016 59 2017 50.97 2018 53.38 2019 58.33 2020 68.61 2021 72.97