Year Percent 1995-01-01 60.667700000000000 1996-01-01 64.982800000000000 1997-01-01 74.692100000000000 1998-01-01 68.098000000000000 1999-01-01 69.299300000000000 2000-01-01 79.062200000000000 2001-01-01 80.405500000000000 2002-01-01 86.236900000000000 2003-01-01 68.452500000000000 2004-01-01 105.637999999999990 2005-01-01 143.113000000000000 2006-01-01 232.672000000000000 2007-01-01 145.351000000000000 2008-01-01 42.741700000000000 2009-01-01 47.926900000000000 2010-01-01 24.168900000000000 2011-01-01 14.856300000000000 2012-01-01 29.437300000000000 2013-01-01 27.703500000000000 2014-01-01 19.847800000000000 2015-01-01 15.347999999999999 2016-01-01 19.171400000000000