Year Percent 1990 0 1995 0.00035 1996 0.00565 1997 0.02754 1998 0.03224 1999 0.1049 2000 0.15362 2001 0.20001 2002 0.83028 2003 1.19306 2004 1.7168 2005 1.8312 2006 2.72318 2007 3.85 2008 4.27 2009 5.44 2010 7.8 2011 9 2012 10.6 2013 15 2014 25.51774 2015 31.44785 2016 34.666