Year per 1,000 adults 2007 160.03 2008 197.93 2009 225.42 2010 267.97 2011 292.46 2012 334.66 2013 373.78 2014 393.84 2015 417.16 2016 443.12 2017 414.75 2018 171.32 2019 168.72 2020 167.84