Year Percent Change at Annual Rate 1960-01-01 2.298626535240380 1961-01-01 2.001122110443030 1962-01-01 1.859888233399040 1963-01-01 1.862845927635310 1964-01-01 1.885714943361370 1965-01-01 1.810166597008820 1966-01-01 1.862813771013880 1967-01-01 1.799356504801250 1968-01-01 1.613408503463820 1969-01-01 1.359783472083840 1970-01-01 1.397831600331290 1971-01-01 1.496599865268580 1972-01-01 1.595371383190110 1973-01-01 1.694139969245380 1974-01-01 1.792904338934160 1975-01-01 1.891677995406080 1976-01-01 1.322595092026650 1977-01-01 1.175141392443530 1978-01-01 1.003520714602240 1979-01-01 0.997669360128831 1980-01-01 1.293244952697620 1981-01-01 1.240595387071610 1982-01-01 1.205555297683940 1983-01-01 1.002811514792970 1984-01-01 0.961733828951842 1985-01-01 0.929446703353191 1986-01-01 1.004879395114870 1987-01-01 1.311767681831790 1988-01-01 1.291064803725800 1989-01-01 1.783590045861960 1990-01-01 1.493593109013880 1991-01-01 1.360506174199920 1992-01-01 1.227417599551370 1993-01-01 1.094331921424930 1994-01-01 0.961244716987835 1995-01-01 0.828159179340214 1996-01-01 1.077164681196200 1997-01-01 1.057015394639850 1998-01-01 0.865613663209682 1999-01-01 0.827369318170541 2000-01-01 0.882998576899551 2001-01-01 1.009521666189520 2002-01-01 0.897131276677935 2003-01-01 0.996232738932617 2004-01-01 1.002034424325750 2005-01-01 0.985903766968816 2006-01-01 0.796844597283984 2007-01-01 0.969853611087127 2008-01-01 1.082197085606530 2009-01-01 1.144840182570990 2010-01-01 1.113959720712390 2011-01-01 0.987617711325488 2012-01-01 1.180344799407770 2013-01-01 1.149678596269180 2014-01-01 1.083587808883130 2015-01-01 0.832774622172532 2016-01-01 1.198650352198570 2017-01-01 1.215480690542330