Year Percent 1992-01-01 15.13520000000000 1993-01-01 14.84080000000000 1994-01-01 14.84080000000000 1995-01-01 19.91690000000000 1996-01-01 18.43370000000000 1997-01-01 18.87410000000000 1998-01-01 20.08270000000000 1999-01-01 25.50390000000000 2000-01-01 32.00030000000000 2001-01-01 37.51800000000000 2002-01-01 42.07980000000000 2003-01-01 47.41020000000000 2004-01-01 56.27790000000000 2005-01-01 59.86330000000000 2006-01-01 66.50420000000000 2007-01-01 77.29620000000000 2008-01-01 86.61770000000000 2009-01-01 96.89760000000000 2010-01-01 108.27799999999999 2011-01-01 106.87600000000000 2012-01-01 100.65400000000000 2013-01-01 103.56000000000000 2014-01-01 108.73600000000000 2015-01-01 118.05799999999999 2016-01-01 130.44899999999998