Year	Percent
1960-01-01	101.89700000000000
1961-01-01	110.44300000000000
1962-01-01	114.76799999999999
1963-01-01	137.15500000000000
1964-01-01	171.41299999999998
1965-01-01	186.18900000000002
1966-01-01	165.22900000000000
1967-01-01	148.91000000000000
1968-01-01	145.96100000000000
1969-01-01	141.76300000000000
1970-01-01	137.42500000000000
1971-01-01	129.98000000000000
1972-01-01	130.71500000000000
1973-01-01	145.70000000000000
1974-01-01	159.02400000000000
1975-01-01	156.10399999999998
1976-01-01	133.97799999999998
1977-01-01	125.10900000000000
1978-01-01	136.73500000000000
1979-01-01	157.13000000000000
1980-01-01	153.80400000000000
1981-01-01	133.76500000000000
1982-01-01	144.39300000000000
1983-01-01	159.05700000000002
1984-01-01	170.48900000000000
1985-01-01	293.19100000000000
1986-01-01	230.93599999999998
1987-01-01	180.26000000000000
1988-01-01	167.74900000000002
1989-01-01	154.83600000000000
1990-01-01	143.18800000000000
1991-01-01	129.60900000000000
1992-01-01	126.74500000000000
1993-01-01	128.78799999999998
1994-01-01	136.10000000000000
1995-01-01	141.54399999999998
1996-01-01	127.89200000000001
1997-01-01	120.40899999999999
1998-01-01	126.77600000000001
1999-01-01	132.23900000000000
2000-01-01	130.05600000000000
2001-01-01	113.43799999999999
2002-01-01	104.48899999999999
2003-01-01	102.73100000000001
2004-01-01	104.34100000000001
2005-01-01	108.74000000000000
2006-01-01	102.33200000000001
2007-01-01	94.24670000000000
2008-01-01	85.35660000000000
2009-01-01	76.19500000000000
2010-01-01	76.38160000000000
2011-01-01	81.50170000000000
2012-01-01	81.77510000000000
2013-01-01	81.93880000000000
2014-01-01	81.65770000000000
2015-01-01	79.84650000000000
2016-01-01	83.29880000000000