Year Percent Change 1955-01-01 -0.04186965674376020 1956-01-01 6.38027930489180000 1957-01-01 2.65415461401898000 1958-01-01 1.17307534809196000 1959-01-01 -0.18266208605724200 1960-01-01 2.92719702859409000 1961-01-01 -0.00982610933184686 1962-01-01 -0.30262928273116600 1963-01-01 0.10546976245028700 1964-01-01 0.34686216528964700 1965-01-01 0.59726325107169700 1966-01-01 2.30448325182496000 1967-01-01 4.61807843916583000 1968-01-01 3.98984092600506000 1969-01-01 6.83057616992181000 1970-01-01 5.27213082185083000 1971-01-01 1.85808938203114000 1972-01-01 2.51604739860410000 1973-01-01 3.97031536446697000 1974-01-01 11.19374799201530000 1975-01-01 6.43932922403528000 1976-01-01 3.88609566178880000 1977-01-01 5.71759662845254000 1978-01-01 6.73000568116582000 1979-01-01 9.42431911410443000 1980-01-01 11.03412529398150000 1981-01-01 8.08254294399100000 1982-01-01 6.93022462364355000 1983-01-01 0.87399405203411000 1984-01-01 2.09850555598354000 1985-01-01 2.84185091662767000 1986-01-01 2.08087911477352000 1987-01-01 3.68067470428142000 1988-01-01 3.73232327020603000 1989-01-01 2.09843178420110000 1990-01-01 4.35206898099144000 1991-01-01 3.24726304929006000 1992-01-01 1.40966880294698000 1993-01-01 1.09195246395692000 1994-01-01 2.57519774953844000 1995-01-01 0.96147236520561000 1996-01-01 1.41516255982998000 1997-01-01 2.40505643212245000 1998-01-01 3.45862906209831000 1999-01-01 1.00166262799273000 2000-01-01 2.46067813616495000 2001-01-01 1.56943650706894000 2002-01-01 -1.32994467124378000 2003-01-01 0.44034550709803000 2004-01-01 1.82616305018917000 2005-01-01 1.48759215819327000 2006-01-01 3.41899958401573000 2007-01-01 3.37268469770834000 2008-01-01 2.68634479284184000 2009-01-01 -0.34282343253089900 2010-01-01 -1.19939832415606000