Year Percent Change at Annual Rate 1960-01-01 1.550019390388990 1961-01-01 1.606574959461580 1962-01-01 1.399730954112600 1963-01-01 1.235633443123380 1964-01-01 1.242699159481800 1965-01-01 1.227445510548220 1966-01-01 1.224197912545190 1967-01-01 1.201180912123000 1968-01-01 1.125231322859990 1969-01-01 0.920478952952093 1970-01-01 1.036281025971550 1971-01-01 1.245582855402710 1972-01-01 1.081907096144340 1973-01-01 0.954349569026780 1974-01-01 0.903795649203906 1975-01-01 0.844284714491626 1976-01-01 0.814807301678743 1977-01-01 0.789147833101285 1978-01-01 0.726941155491028 1979-01-01 0.540861205437315 1980-01-01 0.451032941179723 1981-01-01 0.576822232379474 1982-01-01 0.703386263382870 1983-01-01 0.807019735359073 1984-01-01 0.829019018784799 1985-01-01 0.859591157107066 1986-01-01 0.965016472614713 1987-01-01 1.041052830586890 1988-01-01 1.063956866196880 1989-01-01 0.795883483400290 1990-01-01 0.367999030323355 1991-01-01 0.170116869352429 1992-01-01 -0.108586324904251 1993-01-01 -0.474107542700159 1994-01-01 -0.694003962919015 1995-01-01 -0.769728017770742 1996-01-01 -0.760343408174495 1997-01-01 -0.737830358066631 1998-01-01 -0.724436206600195 1999-01-01 -0.709489234071613 2000-01-01 -0.703385440488978 2001-01-01 -0.824008723044179 2002-01-01 -0.802765710748508 2003-01-01 -0.812278097406687 2004-01-01 -1.122991274832430 2005-01-01 -1.628401125934270 2006-01-01 -1.596378318300940 2007-01-01 -1.187947957259000 2008-01-01 -1.028483175465390 2009-01-01 -1.110345754372380 2010-01-01 -2.096943419854750 2011-01-01 -2.258463898828270 2012-01-01 -1.341201988215950 2013-01-01 -1.012007368181030 2014-01-01 -0.859827343070249 2015-01-01 -0.940753796646208 2016-01-01 -1.270694532988570 2017-01-01 -1.422437655366680