Year Percent Change at Annual Rate 1960-01-01 1.333295822128340 1961-01-01 1.387476719656700 1962-01-01 1.441092136361470 1963-01-01 1.487018590317050 1964-01-01 1.522284568546290 1965-01-01 1.552033416032720 1966-01-01 1.578790364796500 1967-01-01 1.613755493437450 1968-01-01 1.671424905791500 1969-01-01 1.757573525495390 1970-01-01 1.861430983506840 1971-01-01 1.968420525779260 1972-01-01 2.063650829268180 1973-01-01 2.142678196025810 1974-01-01 2.200977194086640 1975-01-01 2.243098337245720 1976-01-01 2.281159377172930 1977-01-01 2.318491345074440 1978-01-01 2.347593956880520 1979-01-01 2.368417589011150 1980-01-01 2.383351783196020 1981-01-01 2.344529813181890 1982-01-01 2.298931372865190 1983-01-01 2.336810775130960 1984-01-01 2.482702612011310 1985-01-01 2.669388344803920 1986-01-01 2.927807042796280 1987-01-01 3.076330919181200 1988-01-01 2.890309371739000 1989-01-01 2.296668662596190 1990-01-01 1.466508344165680 1991-01-01 0.577908847968673 1992-01-01 -0.136285459605547 1993-01-01 -0.556409042203797 1994-01-01 -0.551234558266660 1995-01-01 -0.205691763998397 1996-01-01 0.176016202189308 1997-01-01 0.538089901869701 1998-01-01 1.113083160772090 1999-01-01 1.914577920116710 2000-01-01 2.810507021804570 2001-01-01 3.759265732809690 2002-01-01 4.498713112514420 2003-01-01 4.772759822494710 2004-01-01 4.515110206279350 2005-01-01 3.941446231666280 2006-01-01 3.308059106398550 2007-01-01 2.810762720668830 2008-01-01 2.462280172153790 2009-01-01 2.322840471315510 2010-01-01 2.325427560520490 2011-01-01 2.340844115478410 2012-01-01 2.308569651571020 2013-01-01 2.279086461713260 2014-01-01 2.243938108394760 2015-01-01 2.205467122968560 2016-01-01 2.175479240872440 2017-01-01 2.153733634862720