Year per 1,000 adults 2008 207.705 2009 207.95 2010 223.72 2011 246.61 2012 228.44 2013 268.92499999999995 2014 326.29 2015 336 2016 379.76 2017 466.68 2018 517.12 2019 525.5550000000001 2020 524.665 2021 634.5899999999999