Year Per 100 People 2001 0.06387 2002 0.59884 2003 1.43473 2004 2.28535 2005 3.14092 2006 4.00076 2007 4.86476 2008 11.41151 2009 12.88917 2010 14.839 2011 15.05944 2012 15.50272 2013 16.30835 2014 16.58194 2015 18.02741 2016 18.71601 2017 18.0201