Year Percent Change 1979-01-01 14.736279923188800 1980-01-01 17.460323837903300 1981-01-01 15.387885698410200 1982-01-01 11.207610638784800 1983-01-01 -0.780142573791171 1984-01-01 0.636497902726673 1985-01-01 17.757106332372500 1986-01-01 16.689704563967400 1987-01-01 13.110470048934500 1988-01-01 4.552873675054200 1989-01-01 1.560007933148460 1990-01-01 2.554839790685180 1991-01-01 0.841634232780693 1992-01-01 -1.005164512629090 1993-01-01 -1.203499165079620 1994-01-01 2.422137185984920 1995-01-01 1.085860344470680 1996-01-01 3.152596497047460 1997-01-01 1.957345603810670 1998-01-01 1.091416532150970 1999-01-01 -2.818939558390280 2000-01-01 -2.188444687259230 2001-01-01 3.126618358767590 2002-01-01 1.665383360862110 2003-01-01 3.209272097160260 2004-01-01 3.510129612603810 2005-01-01 5.032184579028050 2006-01-01 4.825668546772160 2007-01-01 1.670344362738930 2008-01-01 5.768613278756960 2009-01-01 3.401809398701080 2010-01-01 2.013762091882050