Year	Percent
1963-01-01	87.59260000000000
1964-01-01	90.21590000000000
1965-01-01	93.51600000000000
1966-01-01	92.44460000000000
1967-01-01	82.56290000000000
1968-01-01	74.80370000000000
1969-01-01	76.30640000000000
1970-01-01	82.05140000000000
1971-01-01	88.52400000000000
1972-01-01	94.78140000000000
1973-01-01	109.76700000000001
1974-01-01	122.43600000000000
1975-01-01	119.62200000000001
1976-01-01	118.20200000000001
1977-01-01	122.11500000000000
1978-01-01	129.63900000000000
1979-01-01	135.30000000000000
1980-01-01	137.51800000000000
1981-01-01	139.20700000000000
1982-01-01	142.70700000000000
1983-01-01	149.47299999999998
1984-01-01	156.04000000000000
1985-01-01	155.51300000000000
1986-01-01	142.38500000000000
1987-01-01	123.69500000000000
1988-01-01	114.39100000000000
1989-01-01	110.55000000000000
1990-01-01	104.95900000000000
1991-01-01	101.49799999999999
1992-01-01	101.60400000000000
1993-01-01	105.29000000000000
1994-01-01	108.18500000000000
1995-01-01	113.92600000000000
1996-01-01	122.39500000000000
1997-01-01	126.24200000000000
1998-01-01	113.15200000000000
1999-01-01	97.22910000000000
2000-01-01	95.78220000000000
2001-01-01	104.72500000000000
2002-01-01	105.08500000000000
2003-01-01	99.25170000000000
2004-01-01	97.10240000000000
2005-01-01	94.34780000000000
2006-01-01	85.99570000000000
2007-01-01	81.76320000000000
2008-01-01	84.10110000000000
2009-01-01	81.38770000000000
2010-01-01	79.72380000000000
2011-01-01	84.72820000000000
2012-01-01	90.36050000000000
2013-01-01	97.56530000000000
2014-01-01	104.29200000000000
2015-01-01	106.45600000000000
2016-01-01	105.34200000000001