Year Percent 1990 0 1996 0.02036 1997 0.09958 1998 0.1949 1999 0.38166 2000 0.74763 2001 1.09879 2002 1.79497 2003 2.11194 2004 3.45244 2005 7.90701 2006 7.96207 2007 11.21 2008 14.27 2009 18.9 2010 19.8 2011 24.76352 2012 29.34 2013 36.9 2014 43 2015 49.72 2016 53.4 2017 61.07576