Year Percent Change at Annual Rate 1960-01-01 1.812133275758320 1961-01-01 1.875869377024640 1962-01-01 1.934044088966270 1963-01-01 1.988110252188280 1964-01-01 2.040505901764150 1965-01-01 2.090714011362990 1966-01-01 2.138754714147330 1967-01-01 2.183685056903370 1968-01-01 2.226825849420910 1969-01-01 2.267879218517310 1970-01-01 2.308532681508430 1971-01-01 2.349268385642900 1972-01-01 2.390425997049700 1973-01-01 2.432037286254330 1974-01-01 2.473740986965190 1975-01-01 2.516272043746980 1976-01-01 2.519102901485920 1977-01-01 2.518780279351630 1978-01-01 2.587010037543090 1979-01-01 2.742126025532030 1980-01-01 2.928644210156190 1981-01-01 3.111468721759810 1982-01-01 3.199229869619080 1983-01-01 3.120024631924290 1984-01-01 2.841919134819090 1985-01-01 2.429359940219950 1986-01-01 2.090150963119260 1987-01-01 1.790225419365730 1988-01-01 1.317717634397660 1989-01-01 0.629637301285322 1990-01-01 -0.156192936660871 1991-01-01 -1.099954884143290 1992-01-01 -1.867585588402560 1993-01-01 -1.963847460302260 1994-01-01 -1.083575190273890 1995-01-01 0.510153424008386 1996-01-01 2.381786111089080 1997-01-01 3.909128237889980 1998-01-01 4.800631402088000 1999-01-01 4.893767271604460 2000-01-01 4.499161118694620 2001-01-01 4.004689245549210 2002-01-01 3.699256799925230 2003-01-01 3.587703740668230 2004-01-01 3.741785769411620 2005-01-01 4.041959990858700 2006-01-01 4.335291552476930 2007-01-01 4.487322252245430 2008-01-01 4.485712666943440 2009-01-01 4.305463106899710 2010-01-01 4.018453648001420 2011-01-01 3.721077465661520 2012-01-01 3.474266786699000 2013-01-01 3.266667216598800 2014-01-01 3.113461135498390 2015-01-01 2.999954992643460 2016-01-01 2.891554145380350 2017-01-01 2.781585649159290