Year Percent 1994 59.96529 1995 8.00418 1996 3.0325 1997 6.00508 1998 10.35774 1999 1.26155 2000 -4.28323 2001 2.64654 2002 0.71314 2003 1.79752 2004 4.82374 2005 6.07668 2006 4.63111 2007 6.51803 2008 12.25379 2009 2.50438 2010 3.12059 2011 3.36407 2012 1.44052 2013 0.78139 2014 2.6322 2015 1.71927 2016 3.45612 2017 3.42865