Year Percent 1990 0 1996 0.00104 1997 0.00201 1998 0.00291 1999 0.02814 2000 0.03626 2001 0.10519 2002 0.12715 2003 0.1557 2004 0.18993 2005 0.22134 2006 0.29403 2007 0.39039 2008 0.7 2009 0.76 2010 0.83 2011 0.9 2012 1.05 2013 1.15 2014 1.24868 2015 2.47622 2016 4.32276 2017 10.22431