Year Percent 1960-01-01 102.03000000000000 1961-01-01 100.51600000000000 1962-01-01 100.14900000000000 1963-01-01 103.46600000000001 1964-01-01 104.88100000000000 1965-01-01 101.62400000000000 1966-01-01 94.94450000000000 1967-01-01 96.44700000000000 1968-01-01 94.22870000000000 1969-01-01 87.67510000000000 1970-01-01 84.80230000000000 1971-01-01 81.33820000000000 1972-01-01 79.38570000000000 1973-01-01 79.35490000000000 1974-01-01 80.45790000000000 1975-01-01 81.84130000000000 1976-01-01 83.72880000000000 1977-01-01 86.05380000000000 1978-01-01 100.94900000000000 1979-01-01 109.05400000000000 1980-01-01 105.39100000000000 1981-01-01 97.98670000000000 1982-01-01 91.13290000000000 1983-01-01 87.03930000000000 1984-01-01 81.89210000000000 1985-01-01 76.87320000000000 1986-01-01 75.15230000000000 1987-01-01 68.54890000000000 1988-01-01 60.25350000000000 1989-01-01 58.03500000000000 1990-01-01 58.00970000000000 1991-01-01 59.98450000000000 1992-01-01 62.88630000000000 1993-01-01 62.47630000000000 1994-01-01 58.16060000000000 1995-01-01 57.23170000000000 1996-01-01 58.71040000000000 1997-01-01 60.03150000000000 1998-01-01 65.49920000000000 1999-01-01 74.86230000000000 2000-01-01 86.20480000000000 2001-01-01 56.57530000000000 2002-01-01 61.16850000000000 2003-01-01 69.72980000000000 2004-01-01 76.82040000000000 2005-01-01 84.29500000000000 2006-01-01 90.67080000000000 2007-01-01 94.21460000000000 2008-01-01 94.42670000000000 2009-01-01 90.22860000000000 2010-01-01 101.80200000000000 2011-01-01 127.56700000000001 2012-01-01 136.49800000000000 2013-01-01 131.05100000000002 2014-01-01 126.17600000000000 2015-01-01 138.72700000000000 2016-01-01 153.24200000000002