Year Percent 1960-01-01 15.49380000000000 1961-01-01 16.44980000000000 1962-01-01 17.03900000000000 1963-01-01 15.49940000000000 1964-01-01 15.84360000000000 1965-01-01 16.06850000000000 1966-01-01 17.59070000000000 1967-01-01 19.77440000000000 1968-01-01 22.86740000000000 1969-01-01 26.35580000000000 1970-01-01 25.41730000000000 1971-01-01 26.82790000000000 1972-01-01 28.43090000000000 1973-01-01 29.17520000000000 1974-01-01 34.77410000000000 1975-01-01 44.22940000000000 1976-01-01 47.51970000000000 1977-01-01 50.88510000000000 1978-01-01 53.71170000000000 1979-01-01 53.41780000000000 1980-01-01 57.99700000000000 1981-01-01 67.80050000000000 1982-01-01 74.48340000000000 1983-01-01 78.24700000000000 1984-01-01 81.93460000000000 1985-01-01 94.44240000000000 1986-01-01 113.42399999999999 1987-01-01 109.44100000000000 1988-01-01 100.87700000000001 1989-01-01 102.52799999999999 1990-01-01 76.20870000000000 1991-01-01 49.23440000000000 1992-01-01 66.24340000000000 1993-01-01 84.37590000000000 1994-01-01 87.75540000000000 1995-01-01 88.45940000000000 1996-01-01 91.12660000000000 1997-01-01 95.04410000000000 1998-01-01 105.32000000000000 1999-01-01 106.82500000000000 2000-01-01 100.21400000000000 2001-01-01 111.67800000000000 2002-01-01 110.12500000000000 2003-01-01 107.22600000000000 2004-01-01 104.25700000000000 2005-01-01 102.58000000000000 2006-01-01 102.55200000000000 2007-01-01 102.33800000000000 2008-01-01 100.73800000000000 2009-01-01 118.21400000000000 2010-01-01 115.58700000000000 2011-01-01 116.86300000000000 2012-01-01 122.45000000000000 2013-01-01 126.36500000000000 2014-01-01 124.45400000000000 2015-01-01 123.82799999999999 2016-01-01 119.53600000000000