Year Percent Change 1978-01-01 17.106171808048900 1979-01-01 16.160372752926500 1980-01-01 24.362463548016200 1981-01-01 19.480860474911800 1982-01-01 19.380212761984200 1983-01-01 19.155515609929000 1984-01-01 19.714294604069600 1985-01-01 16.224803950541500 1986-01-01 14.980657563451400 1987-01-01 7.636715793624700 1988-01-01 0.657882632927762 1989-01-01 6.669318424602380 1990-01-01 12.969576285749300 1991-01-01 17.568651153642100 1992-01-01 11.448580685071200 1993-01-01 6.070927381248690 1994-01-01 2.060295157615900 1995-01-01 0.951786766747571 1996-01-01 -0.528716750939626 1997-01-01 1.550226556031030 1998-01-01 1.915244371421040 1999-01-01 0.992636331003976 2000-01-01 -0.164986388608016 2001-01-01 1.497610005121720 2002-01-01 2.165753790694750 2003-01-01 0.343793159964884 2004-01-01 0.523301057488792 2005-01-01 2.274864083475980 2006-01-01 1.460435890758280 2007-01-01 -0.113591416510374 2008-01-01 2.393744654013900 2009-01-01 1.280845985879400 2010-01-01 0.201987724564156