Year Percent 1995-01-01 1.2282600000000001 1996-01-01 1.0844400000000000 1997-01-01 0.7443500000000000 1998-01-01 0.6509149999999999 1999-01-01 0.8228639999999999 2000-01-01 0.9527870000000000 2001-01-01 0.9342840000000000 2002-01-01 1.1288400000000000 2003-01-01 1.2963799999999999 2004-01-01 1.4303200000000000 2005-01-01 2.1500500000000000 2006-01-01 2.8084500000000000 2007-01-01 2.0122600000000000 2008-01-01 2.0822599999999998 2009-01-01 1.5847300000000000 2010-01-01 1.9708700000000001 2011-01-01 2.1766500000000000 2012-01-01 2.6058100000000000 2013-01-01 3.0188599999999997