Year Percent 1960-01-01 144.57500000000000 1961-01-01 133.53100000000000 1962-01-01 116.87500000000000 1963-01-01 110.87700000000001 1964-01-01 109.20600000000000 1965-01-01 108.36100000000000 1966-01-01 111.49100000000000 1967-01-01 109.23800000000000 1968-01-01 107.40500000000000 1969-01-01 102.79299999999999 1970-01-01 93.14880000000000 1971-01-01 91.10810000000000 1972-01-01 93.78070000000000 1973-01-01 96.66830000000000 1974-01-01 108.21200000000000 1975-01-01 123.47200000000001 1976-01-01 120.90500000000000 1977-01-01 117.23700000000001 1978-01-01 116.21500000000000 1979-01-01 115.60300000000000 1980-01-01 114.27400000000000 1981-01-01 134.07500000000000 1982-01-01 169.28300000000000 1983-01-01 178.67900000000000 1984-01-01 180.64000000000000 1985-01-01 167.64500000000000 1986-01-01 144.39400000000000 1987-01-01 136.61200000000000 1988-01-01 141.04000000000000 1989-01-01 139.16700000000000 1990-01-01 130.31500000000000 1991-01-01 123.22200000000001 1992-01-01 122.79100000000000 1993-01-01 122.80200000000000 1994-01-01 120.72000000000000 1995-01-01 123.04500000000000 1996-01-01 129.78900000000000 1997-01-01 157.86600000000000 1998-01-01 173.98500000000000 1999-01-01 172.39100000000000 2000-01-01 202.78500000000000 2001-01-01 229.32700000000000 2002-01-01 226.21099999999998 2003-01-01 227.41700000000000 2004-01-01 259.28800000000000 2005-01-01 328.98500000000000 2006-01-01 345.50100000000000 2007-01-01 308.27000000000000 2008-01-01 238.26500000000000 2009-01-01 188.32200000000000 2010-01-01 185.82900000000000 2011-01-01 177.07000000000000 2012-01-01 157.55100000000002 2013-01-01 147.84799999999998 2014-01-01 132.83600000000000 2015-01-01 122.09700000000001 2016-01-01 126.58200000000001