Year per 1,000 adults 2009 434.1 2010 473.015 2011 605.82 2012 622.38 2013 620.63 2014 711.87 2015 744.51 2016 761.74 2017 799.89 2018 813.78 2019 762.13 2020 746.21 2021 772.0550000000001