Year Percent Change at Annual Rate 1960-01-01 2.1519760801263800 1961-01-01 1.5731654530417900 1962-01-01 1.0077080497614100 1963-01-01 0.5583584095320940 1964-01-01 0.2930783926980240 1965-01-01 0.1977729695763050 1966-01-01 0.0987399998654982 1967-01-01 -0.0557975849830632 1968-01-01 0.0515065682259843 1969-01-01 0.1800643573338140 1970-01-01 0.5893674971467940 1971-01-01 0.9999235927585080 1972-01-01 1.3858001599399400 1973-01-01 1.6003641207088000 1974-01-01 1.6073731623301500 1975-01-01 1.4470991252285800 1976-01-01 1.2855066614892600 1977-01-01 1.1143261880828500 1978-01-01 1.0713837644953600 1979-01-01 1.1737492323305200 1980-01-01 1.3172941707633900 1981-01-01 1.5545027268331600 1982-01-01 1.6792392836146200 1983-01-01 1.6906664476470400 1984-01-01 1.4733426724237300 1985-01-01 1.1264875778977100 1986-01-01 0.7118697558047370 1987-01-01 0.4500720496563320 1988-01-01 0.2157276505647140 1989-01-01 0.2630366864086050 1990-01-01 0.4323337400746480 1991-01-01 0.6264517718845170 1992-01-01 0.8035412307730490 1993-01-01 0.9166578076920700 1994-01-01 0.9543538132105180 1995-01-01 0.8639079876284560 1996-01-01 0.8952669352044380 1997-01-01 0.9129254314024530 1998-01-01 0.8666062455124850 1999-01-01 0.8748851660584850 2000-01-01 0.8828835408518350 2001-01-01 0.8627966995641370 2002-01-01 0.8278371301127900 2003-01-01 0.9273731085581580 2004-01-01 1.1502534477915700 2005-01-01 1.4275951394052100 2006-01-01 1.8035415032467000 2007-01-01 2.0225376207288200 2008-01-01 2.0912773864130300 2009-01-01 1.8816088301638300 2010-01-01 1.5211897612603300 2011-01-01 1.0805698309099400 2012-01-01 0.7598336238293050 2013-01-01 0.4963444463933320 2014-01-01 0.4231114152910690 2015-01-01 0.4578822479322160 2016-01-01 0.4999619819779780 2017-01-01 0.5078125791988620