Year	Percent
1960-01-01	80.68900000000000
1961-01-01	78.74870000000000
1962-01-01	74.52790000000000
1963-01-01	70.50090000000000
1964-01-01	70.14660000000000
1965-01-01	67.94560000000000
1966-01-01	68.80210000000000
1967-01-01	72.65220000000000
1968-01-01	79.48920000000000
1969-01-01	110.40400000000000
1970-01-01	136.28400000000000
1971-01-01	155.19299999999998
1972-01-01	167.59300000000000
1973-01-01	166.06099999999998
1974-01-01	173.55400000000000
1975-01-01	180.54800000000000
1976-01-01	187.41099999999997
1977-01-01	190.06799999999998
1978-01-01	179.19799999999998
1979-01-01	166.19400000000002
1980-01-01	166.38200000000000
1981-01-01	164.36200000000000
1982-01-01	162.92800000000000
1983-01-01	155.10600000000000
1984-01-01	141.97899999999998
1985-01-01	128.51800000000000
1986-01-01	108.17200000000001
1987-01-01	102.02200000000000
1988-01-01	133.47899999999998
1989-01-01	127.33400000000000
1990-01-01	128.60700000000000
1991-01-01	149.16899999999998
1992-01-01	147.52700000000002
1993-01-01	158.65500000000000
1994-01-01	162.98300000000000
1995-01-01	153.69100000000000
1996-01-01	138.67000000000000
1997-01-01	124.29100000000000
1998-01-01	98.99020000000000
1999-01-01	77.68080000000000
2000-01-01	72.96400000000000
2001-01-01	68.07920000000000
2002-01-01	66.99400000000000
2003-01-01	64.59740000000000
2004-01-01	59.94630000000000
2005-01-01	59.31200000000000
2006-01-01	60.96740000000000
2007-01-01	67.60720000000000
2008-01-01	76.12240000000000
2009-01-01	85.62740000000000
2010-01-01	98.77380000000000
2011-01-01	110.50399999999999
2012-01-01	116.13500000000000
2013-01-01	119.33100000000000
2014-01-01	121.32600000000001
2015-01-01	118.95200000000001
2016-01-01	107.90299999999999