Year Percent Change 1977-01-01 4.9681924429846600 1978-01-01 10.7040813307610000 1979-01-01 -5.3652209757096100 1980-01-01 7.2901295400935600 1981-01-01 10.8443935789674000 1982-01-01 0.0613863088559373 1983-01-01 -1.6008559780095700 1984-01-01 6.2280307328120000 1985-01-01 2.6273852216749300 1986-01-01 1.8788896766842100 1987-01-01 0.8219792522045160 1988-01-01 -0.7751127739388550 1989-01-01 2.3339356084113000 1990-01-01 3.6358044935051800 1991-01-01 3.1261527048373700 1992-01-01 3.6686510199005800 1993-01-01 4.4445834669405100 1994-01-01 1.1700190422423100 1995-01-01 -0.6706689795481240 1996-01-01 0.2962961107730870 1997-01-01 -0.9649848012002790 1998-01-01 -0.0420764697819034 1999-01-01 1.5006677053017900 2000-01-01 0.5063042444348590 2001-01-01 0.0876042805296989 2002-01-01 0.2420422461725880 2003-01-01 2.1330925157404100 2004-01-01 1.9031229987476200 2005-01-01 1.9312149265205600 2006-01-01 0.9957848084086510 2007-01-01 1.1874812471493100 2008-01-01 4.2280362573062600 2009-01-01 4.4125025963460900 2010-01-01 0.4056545247722200