Year Percent Change at Annual Rate 1961-01-01 2.28515319122384 1962-01-01 2.31080354273945 1963-01-01 2.32988521242450 1964-01-01 2.34141273241053 1965-01-01 2.34719976153410 1966-01-01 2.35123823202257 1967-01-01 2.35416493210725 1968-01-01 2.35559409398934 1969-01-01 2.35584694229294 1970-01-01 2.35495267064678 1971-01-01 2.35416359076000 1972-01-01 2.35416804492479 1973-01-01 2.35633537833570 1974-01-01 2.36329982358990 1975-01-01 2.37164780121566 1976-01-01 2.37772124642707 1977-01-01 2.38204740074168 1978-01-01 2.39133999352256 1979-01-01 2.40778262543304 1980-01-01 2.42571969245287 1981-01-01 2.44510116014851 1982-01-01 2.44823612548859 1983-01-01 2.44509071477322 1984-01-01 2.42427347270358 1985-01-01 2.38907479542090 1986-01-01 2.35318652983642 1987-01-01 2.31708345742618 1988-01-01 2.27917383642277 1989-01-01 2.23710744124699 1990-01-01 2.29547868635920 1991-01-01 2.14193586893632 1992-01-01 2.10177660958071 1993-01-01 2.05012207704256 1994-01-01 1.98869260328844 1995-01-01 1.94173253458105 1996-01-01 1.90738665703256 1997-01-01 1.87323386538927 1998-01-01 1.83154544743864 1999-01-01 1.79097221058842 2000-01-01 1.77070762600080 2001-01-01 1.74545957893845 2002-01-01 1.71929592638182 2003-01-01 1.69433590351164 2004-01-01 1.66671056971799 2005-01-01 1.63761462216473 2006-01-01 1.60964542874976 2007-01-01 1.58530789882876 2008-01-01 1.56629432238280 2009-01-01 1.55358819896250 2010-01-01 1.55491535487072 2011-01-01 1.54432821359558 2012-01-01 1.52180239796080 2013-01-01 1.51006522427576 2014-01-01 1.48665733577604 2015-01-01 1.46760133037506 2016-01-01 1.44411824315362 2017-01-01 1.41815789470165