Year Percent 1992 -3.02624 1993 -0.46267 1994 3.08817 1995 1.63092 1996 0.1861 1997 3.54856 1998 4.47867 1999 3.4796 2000 4.48023 2001 4.07897 2002 4.82628 2003 4.1465 2004 5.2377 2005 4.59603 2006 4.01301 2007 0.59047 2008 1.03226 2009 -6.45518 2010 0.91019 2011 1.95039 2012 -1.13452 2013 2.37775 2014 4.50888 2015 3.6133 2016 2.51527 2017 4.33845