Substance Abuse and Suicide: Percent of the Total U.S. Population X VARIABLE Y VARIABLE Year Substance Use Suicides 1999 6.82 0.000105 2000 6.78 0.000104 2001 7.00 0.000107 2002 7.12 0.00011 2003 7.09 0.000108 2004 7.05 0.00011 2005 7.17 0.000109 2006 7.24 0.00011 2007 7.28 0.000113 2008 7.36 0.000116 2009 7.80 0.000118 2010 7.81 0.000121 2011 7.88 0.000123 2012 7.87 0.000125 2013 8.07 0.000126 2014 8.12 0.00013 2015 8.06 0.000133 2016 8.17 0.000134 2017 8.18 0.00014 2018 8.23 0.000142