Year Per 100 People 2002 0.01377 2003 0.06884 2004 0.328 2005 0.83296 2006 1.58179 2007 2.71077 2008 6.49603 2009 9.84074 2010 12.26188 2011 12.90977 2012 15.01281 2013 15.76105 2014 18.31741 2015 20.47817 2016 18.72426 2017 23.86751