Year per 1,000 adults 2007 250.92 2008 259.98 2009 256.61 2010 256.93 2011 267.15 2012 279.26 2013 302.06 2014 294.89 2015 298.48 2016 305.94 2017 312.62 2018 319.62 2019 340.9 2020 328.17 2021 327.22