Year Percent Change at Annual Rate 1960-01-01 1.89266592552134000 1961-01-01 1.93224898774758000 1962-01-01 1.94603170796004000 1963-01-01 1.90080750979111000 1964-01-01 1.78125163373333000 1965-01-01 1.61508706634845000 1966-01-01 1.43198285797002000 1967-01-01 1.27534815949213000 1968-01-01 1.17084784867535000 1969-01-01 1.13661350799076000 1970-01-01 1.15168537758924000 1971-01-01 1.18317827993067000 1972-01-01 1.19811747045649000 1973-01-01 1.19003945070534000 1974-01-01 1.14723182336295000 1975-01-01 1.08183814347344000 1976-01-01 1.00275883784591000 1977-01-01 0.93778782869078500 1978-01-01 0.91037104209718700 1979-01-01 0.93381455202768000 1980-01-01 0.98660754990319500 1981-01-01 1.01534178484226000 1982-01-01 1.00848881564851000 1983-01-01 0.99835014320838900 1984-01-01 0.98489602732437000 1985-01-01 0.94669783905744500 1986-01-01 0.98269477524181000 1987-01-01 0.96511606230190400 1988-01-01 0.65736070446019600 1989-01-01 -0.03112690628900100 1990-01-01 -0.96390129887559600 1991-01-01 -2.07859753412314000 1992-01-01 -3.07660400341843000 1993-01-01 -3.63081127505816000 1994-01-01 -3.46398211384526000 1995-01-01 -2.69772207995649000 1996-01-01 -1.66145617131310000 1997-01-01 -0.74201080169119000 1998-01-01 -0.05187316620994590 1999-01-01 0.22991904640059100 2000-01-01 0.20165240567147800 2001-01-01 0.12146475553437300 2002-01-01 0.11986076599583600 2003-01-01 0.09106487492286090 2004-01-01 0.05396444350377520 2005-01-01 0.00642617691485658 2006-01-01 -0.05454306564079400 2007-01-01 -0.14478120394897000 2008-01-01 -0.27597664989705100 2009-01-01 -0.45373278946354500 2010-01-01 -0.65546260758055300 2011-01-01 -0.89649038153067000 2012-01-01 -1.10849273909632000 2013-01-01 -1.19124019263136000 2014-01-01 -1.08764130510763000 2015-01-01 -0.84599649904793400 2016-01-01 -0.54290804954551800 2017-01-01 -0.27902162130992800