Annual Percent Change
1971-01-01 4.871977791615700
1972-01-01 4.161909580535230
1973-01-01 5.769255168125510
1974-01-01 10.472628804784200
1975-01-01 8.514760136293110
1976-01-01 6.372724301389240
1977-01-01 6.661666176581830
1978-01-01 8.077890739248040
1979-01-01 9.694690984392430
1980-01-01 11.091856369047700
1981-01-01 8.251822721312180
1982-01-01 6.379060837979080
1983-01-01 3.830987582779300
1984-01-01 2.768335722137430
1985-01-01 3.371923854392270
1986-01-01 3.349227930095800
1987-01-01 3.154690398174440
1988-01-01 2.814840235269020
1989-01-01 3.639320167936870
1990-01-01 4.812246610582310
1991-01-01 4.266110784806230
1992-01-01 3.025421126618280
1993-01-01 2.694347030004580
1994-01-01 1.241089193910680
1995-01-01 1.326603238327420
1996-01-01 0.725521772930461
1997-01-01 1.051404342784520
1998-01-01 2.133843751360820
1999-01-01 1.266000827099940
2000-01-01 2.370889438318360
2001-01-01 2.258857195324670
2002-01-01 1.562756921774020
2003-01-01 2.343608002452340
2004-01-01 1.676201832354560
2005-01-01 2.503244245985650
2006-01-01 3.088026281565740
2007-01-01 2.788529896820480
2008-01-01 1.588831927586400
2009-01-01 0.149628944896220
2010-01-01 0.144597037237313