Year Percent 1995 -2.24974 1996 -1.24911 1997 -1.13847 1998 -1.69344 1999 -4.33367 2000 -3.66792 2001 -1.04085 2002 0.988 2003 -0.31677 2004 -1.44464 2005 -0.6376 2006 -0.04784 2007 -1.29784 2008 -1.92669 2009 1.86882 2010 1.4349 2011 1.83561 2012 4.21801 2013 5.55932 2014 7.399 2015 8.58773 2016 9.15597 2017 9.65756