Year per 1,000 adults 2004 242.73 2005 257.06 2006 459.18 2007 644.14 2008 627.88 2009 835.04 2010 896.06 2011 832.48 2012 781.45 2013 498.68 2014 500.56 2015 454.07 2016 458.02 2017 482.17 2018 476.2 2019 436.45 2020 410.98 2021 391.94