Year Percent 1960-01-01 116.60700000000001 1961-01-01 110.67600000000000 1962-01-01 98.07360000000000 1963-01-01 88.95080000000000 1964-01-01 83.94680000000000 1965-01-01 80.00120000000000 1966-01-01 80.45250000000000 1967-01-01 80.09880000000000 1968-01-01 84.79620000000000 1969-01-01 91.23899999999999 1970-01-01 90.74600000000001 1971-01-01 87.69850000000000 1972-01-01 85.72320000000000 1973-01-01 89.66690000000000 1974-01-01 94.44760000000000 1975-01-01 96.52990000000000 1976-01-01 92.64730000000000 1977-01-01 92.56830000000000 1978-01-01 97.60530000000000 1979-01-01 100.29500000000000 1980-01-01 101.04899999999999 1981-01-01 97.87100000000001 1982-01-01 94.40620000000000 1983-01-01 93.45980000000000 1984-01-01 92.44170000000000 1985-01-01 92.93799999999999 1986-01-01 94.23320000000000 1987-01-01 93.45520000000000 1988-01-01 91.00420000000000 1989-01-01 90.53500000000000 1990-01-01 91.84910000000000 1991-01-01 92.60550000000000 1992-01-01 93.76150000000000 1993-01-01 93.30570000000000 1994-01-01 92.13030000000000 1995-01-01 93.88430000000000 1996-01-01 96.45080000000000 1997-01-01 97.37090000000000 1998-01-01 98.25950000000000 1999-01-01 99.60060000000000 2000-01-01 100.29799999999999 2001-01-01 99.09820000000000 2002-01-01 93.25290000000000 2003-01-01 92.16710000000000 2004-01-01 93.17290000000000 2005-01-01 102.63000000000000 2006-01-01 107.66000000000000 2007-01-01 107.99200000000000 2008-01-01 109.69700000000000 2009-01-01 109.89500000000000 2010-01-01 109.41799999999999 2011-01-01 112.97700000000000 2012-01-01 119.21200000000000 2013-01-01 132.99900000000000 2014-01-01 146.09600000000000 2015-01-01 141.66800000000000