Year Percent 1963-01-01 37.836999999999996 1964-01-01 40.105700000000000 1965-01-01 38.277500000000000 1966-01-01 38.287600000000000 1967-01-01 41.954700000000000 1968-01-01 49.601200000000000 1969-01-01 54.462500000000000 1970-01-01 55.275500000000000 1971-01-01 54.024700000000000 1972-01-01 52.678700000000000 1973-01-01 52.565600000000000 1974-01-01 50.204900000000000 1975-01-01 51.836700000000000 1976-01-01 53.104600000000000 1977-01-01 52.959800000000000 1978-01-01 50.944400000000000 1979-01-01 50.467600000000000 1980-01-01 52.160900000000000 1981-01-01 56.770300000000000 1982-01-01 61.151200000000000 1983-01-01 63.117600000000000 1984-01-01 64.719400000000000 1985-01-01 69.200900000000000 1986-01-01 72.158900000000000 1987-01-01 74.479800000000000 1988-01-01 73.941000000000000 1989-01-01 76.841600000000000 1990-01-01 81.807700000000000 1991-01-01 85.493800000000000 1992-01-01 87.098200000000000 1993-01-01 82.018500000000000 1994-01-01 81.017700000000000 1995-01-01 82.812600000000000 1996-01-01 82.635200000000000 1997-01-01 82.576300000000000 1998-01-01 102.452999999999990 1999-01-01 117.587000000000000 2000-01-01 106.260000000000000 2001-01-01 110.671000000000000 2002-01-01 108.598999999999990 2003-01-01 108.014000000000000 2004-01-01 100.695000000000000 2005-01-01 96.549600000000000 2006-01-01 98.845700000000000 2007-01-01 99.895100000000000 2008-01-01 114.639000000000000 2009-01-01 121.922000000000010 2010-01-01 116.791000000000000 2011-01-01 118.642999999999990 2012-01-01 123.415000000000000 2013-01-01 124.009000000000000 2014-01-01 124.821000000000000 2015-01-01 121.847000000000010 2016-01-01 126.056000000000000