Year	Percent
1984-01-01	76.59610000000000
1985-01-01	79.72510000000000
1986-01-01	83.56720000000000
1987-01-01	91.82550000000000
1988-01-01	93.53570000000000
1989-01-01	103.45400000000000
1990-01-01	106.10000000000000
1991-01-01	121.71100000000000
1992-01-01	119.80100000000000
1993-01-01	117.98600000000000
1994-01-01	115.90000000000000
1995-01-01	118.83800000000000
1996-01-01	127.18500000000000
1997-01-01	133.20300000000000
1998-01-01	145.00600000000000
1999-01-01	159.96900000000000
2000-01-01	158.32299999999998
2001-01-01	161.27700000000002
2002-01-01	161.37500000000000
2003-01-01	159.08700000000002
2004-01-01	136.29300000000000
2005-01-01	132.30000000000000
2006-01-01	128.50600000000000
2007-01-01	119.92399999999999
2008-01-01	113.74400000000000
2009-01-01	116.57000000000000
2010-01-01	100.98899999999999
2011-01-01	92.00790000000000
2012-01-01	97.78660000000000
2013-01-01	98.88600000000001
2014-01-01	105.31500000000000
2015-01-01	132.93900000000000
2016-01-01	138.74300000000000