Year Percent Change at Annual Rate 1960-01-01 2.23358035852650 1961-01-01 2.31997630786761 1962-01-01 2.39788381797872 1963-01-01 2.45457764933169 1964-01-01 2.48415875520190 1965-01-01 2.49595587404134 1966-01-01 2.47865803712898 1967-01-01 2.46468623153025 1968-01-01 2.49836360444217 1969-01-01 2.59384097731916 1970-01-01 2.71436796897123 1971-01-01 2.87958124211862 1972-01-01 2.98912814145624 1973-01-01 2.91900593544400 1974-01-01 2.62939691820003 1975-01-01 2.22030024123716 1976-01-01 1.76549170453576 1977-01-01 1.42432876798224 1978-01-01 1.31755887108230 1979-01-01 1.52033538056566 1980-01-01 1.93169216617536 1981-01-01 2.39666236691830 1982-01-01 2.77549823173632 1983-01-01 3.04715539059645 1984-01-01 3.16952951883505 1985-01-01 3.19139548869214 1986-01-01 3.18495303120618 1987-01-01 3.20664938289125 1988-01-01 3.25451477744211 1989-01-01 3.34166704455608 1990-01-01 3.44334745723637 1991-01-01 3.54364426846464 1992-01-01 3.60087328364280 1993-01-01 3.58504835599221 1994-01-01 3.48437587617657 1995-01-01 3.33318116724340 1996-01-01 3.16905849182403 1997-01-01 3.03241044527612 1998-01-01 2.93742081369225 1999-01-01 2.89723174145672 2000-01-01 2.89289089660225 2001-01-01 2.89575438081698 2002-01-01 2.88521768550388 2003-01-01 2.86361647027596 2004-01-01 2.82585545411285 2005-01-01 2.77871505640641 2006-01-01 2.73013024354922 2007-01-01 2.68981525612003 2008-01-01 2.66115407574631 2009-01-01 2.64706540460822 2010-01-01 2.64159447665885 2011-01-01 2.63767029296574 2012-01-01 2.62759888137920 2013-01-01 2.60893046744012 2014-01-01 2.57906830567915 2015-01-01 2.54146861870415 2016-01-01 2.50182137816318 2017-01-01 2.46369925432305