Year Percent Change at Annual Rate 1960-01-01 2.5075940768211800 1961-01-01 2.3695029727454600 1962-01-01 2.2396077472812500 1963-01-01 2.1170707122966500 1964-01-01 1.9290862091530700 1965-01-01 1.8218042705764400 1966-01-01 1.6848415398748100 1967-01-01 1.5541670103441300 1968-01-01 1.4290818235375200 1969-01-01 1.4089464875301200 1970-01-01 1.3893706788169100 1971-01-01 1.4351192163090300 1972-01-01 1.3828810181739000 1973-01-01 1.3640179759948600 1974-01-01 1.2834735585365500 1975-01-01 1.1135283632185500 1976-01-01 1.0099550268413500 1977-01-01 0.8490044932831460 1978-01-01 0.8119124438504190 1979-01-01 0.8053734807096830 1980-01-01 0.8873172680486730 1981-01-01 0.9670405031682480 1982-01-01 1.0155317219405400 1983-01-01 1.0338977795179300 1984-01-01 1.0233176280029000 1985-01-01 0.9569451016150670 1986-01-01 0.8923650962216600 1987-01-01 0.8569506485300550 1988-01-01 0.7404394174210090 1989-01-01 0.5721306983609120 1990-01-01 0.4066699382553610 1991-01-01 0.2162163004495320 1992-01-01 0.0539811079235008 1993-01-01 -0.1350074459149130 1994-01-01 -0.2705629356157420 1995-01-01 -0.4317352970393580 1996-01-01 -0.2002221333436320 1997-01-01 -0.3698469489328560 1998-01-01 -0.0403999490915699 1999-01-01 -0.1570194739310810 2000-01-01 -0.2033598570234580 2001-01-01 -0.2236265440498190 2002-01-01 -0.2315797357357110 2003-01-01 -0.2815947164871070 2004-01-01 -0.2474498683181150 2005-01-01 -0.2433072298298460 2006-01-01 -0.2779235691911890 2007-01-01 -0.2317471607011500 2008-01-01 -0.1903451776309930 2009-01-01 -0.1262382954394870 2010-01-01 -0.0998646340688359 2011-01-01 -0.0578205867782477 2012-01-01 -0.0131188896045369 2013-01-01 -0.0267768650049581 2014-01-01 -0.0609701011007674 2015-01-01 -0.0643836149210277 2016-01-01 -0.0606242970008353 2017-01-01 -0.0620696123285471