Year per 1,000 adults 2004 186.86 2005 198.53 2006 206.54 2007 195.07 2008 188.4 2009 187.28 2010 180.5 2011 177.39 2012 157.82 2013 193.3 2014 204.97 2015 208.32 2016 216.97 2017 215.18 2018 223.93 2019 223.23 2020 215.03 2021 212.84