Year per 1,000 adults 2006 38.52 2007 74.65 2008 106.75 2009 87.28999999999999 2010 104.215 2011 124.50999999999999 2012 152.06 2013 191.62 2014 222.51 2015 148.1 2016 141.54 2017 144.05 2018 172.75 2019 152.92 2020 252.66500000000002 2021 268.945