Year Percent Change at Annual Rate 1960-01-01 1.245539238205600 1961-01-01 1.130172439358170 1962-01-01 1.045818318424870 1963-01-01 1.044891094886340 1964-01-01 1.151864248980860 1965-01-01 1.326798857553060 1966-01-01 1.505855340425430 1967-01-01 1.646686533669650 1968-01-01 1.768191486769920 1969-01-01 1.858973879481290 1970-01-01 1.913167811669810 1971-01-01 2.006766538983030 1972-01-01 2.075910556048440 1973-01-01 1.975000266934950 1974-01-01 1.660776751169750 1975-01-01 1.231100939463810 1976-01-01 0.727752526236739 1977-01-01 0.330763999034184 1978-01-01 0.221044509012468 1979-01-01 0.501848984610869 1980-01-01 1.053410321996350 1981-01-01 1.690436393978840 1982-01-01 2.205198106239780 1983-01-01 2.542850023926410 1984-01-01 2.629866649090450 1985-01-01 2.548688887185160 1986-01-01 2.429044245006070 1987-01-01 2.358086213051550 1988-01-01 2.317635431501000 1989-01-01 2.331215728700280 1990-01-01 2.375161633873400 1991-01-01 2.427617526347190 1992-01-01 2.442554720168720 1993-01-01 2.395705476610290 1994-01-01 2.268103820299480 1995-01-01 2.095548105160510 1996-01-01 1.910882285961170 1997-01-01 1.767372399462180 1998-01-01 1.696766517336440 1999-01-01 1.725074577419480 2000-01-01 1.821056053148790 2001-01-01 1.934389663650150 2002-01-01 2.031357980561760 2003-01-01 2.117242460908350 2004-01-01 2.181818704842730 2005-01-01 2.233044588931530 2006-01-01 2.279026165269400 2007-01-01 2.329125477244240 2008-01-01 2.383809195862450 2009-01-01 2.441980684785570 2010-01-01 2.501132548154740 2011-01-01 2.555568364109380 2012-01-01 2.596385581465840 2013-01-01 2.612243724286600 2014-01-01 2.597498318793200 2015-01-01 2.561841573303020 2016-01-01 2.519328921113070 2017-01-01 2.479606808872920