Year	Percent
1960-01-01	52.66500000000000
1961-01-01	49.74030000000000
1962-01-01	51.19550000000000
1963-01-01	52.25270000000000
1964-01-01	54.26120000000000
1965-01-01	57.13890000000000
1966-01-01	56.58340000000000
1967-01-01	57.62020000000000
1968-01-01	59.93350000000000
1969-01-01	61.45960000000000
1970-01-01	63.83670000000000
1971-01-01	68.20570000000000
1972-01-01	71.55460000000000
1973-01-01	73.11030000000000
1974-01-01	72.08440000000000
1975-01-01	73.80370000000000
1976-01-01	73.40420000000000
1977-01-01	69.70800000000000
1978-01-01	66.98180000000000
1979-01-01	67.81490000000000
1980-01-01	68.94660000000000
1981-01-01	71.21410000000000
1982-01-01	72.09190000000000
1983-01-01	66.88810000000000
1984-01-01	59.93650000000000
1985-01-01	58.49500000000000
1986-01-01	61.62350000000000
1987-01-01	64.02300000000000
1988-01-01	62.98760000000000
1989-01-01	62.93470000000000
1990-01-01	64.04730000000000
1991-01-01	66.58380000000000
1992-01-01	67.55360000000000
1993-01-01	69.64520000000000
1994-01-01	71.09210000000000
1995-01-01	70.70410000000000
1996-01-01	69.47430000000000
1997-01-01	66.33500000000000
1998-01-01	67.94290000000000
1999-01-01	75.33370000000000
2000-01-01	84.72760000000000
2001-01-01	86.77310000000000
2002-01-01	84.52040000000000
2003-01-01	83.85410000000000
2004-01-01	83.71880000000000
2005-01-01	84.44920000000000
2006-01-01	87.00340000000000
2007-01-01	89.92540000000000
2008-01-01	100.42500000000000
2009-01-01	109.84299999999999
2010-01-01	108.74200000000000
2011-01-01	106.54500000000000
2012-01-01	106.44800000000000
2013-01-01	107.32300000000000
2014-01-01	107.76299999999999
2015-01-01	108.36200000000001
2016-01-01	109.75000000000000