Year Percent 1995-01-01 3.4961300000000004 1996-01-01 3.3559099999999997 1997-01-01 3.6343900000000002 1998-01-01 3.5211900000000003 1999-01-01 3.3806100000000000 2000-01-01 3.3806100000000000 2001-01-01 3.3806100000000000 2002-01-01 3.3806100000000000 2003-01-01 3.3806100000000000 2004-01-01 3.3806100000000000 2005-01-01 0.1516730000000000 2006-01-01 2.2344700000000000 2007-01-01 10.1596000000000000 2008-01-01 7.3974400000000000 2009-01-01 7.3230500000000000 2010-01-01 4.7535000000000000 2011-01-01 2.7846800000000000 2012-01-01 1.6315000000000000 2013-01-01 2.5883900000000000 2014-01-01 8.5111700000000000 2015-01-01 9.0258100000000000