Year per 1,000 adults 2008 277.09 2009 349.27 2010 370.3 2011 426.16499999999996 2012 465.09 2013 476.38 2014 522.6 2015 575.755 2016 556.74 2017 591.6 2018 600.135 2019 639.775 2020 622.68 2021 714.0899999999999