Year Per 100 People 2004 0.37366 2005 0.50236 2006 0.48471 2007 0.50209 2008 0.54874 2009 0.69806 2010 1.16756 2011 2.51469 2012 4.32604 2013 8.62811 2014 5.26216 2015 5.74972