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Title:               Openness at constant prices for United States
Series ID:           OPENRPUSA156NUPN
Source:              University of Pennsylvania
Release:             Penn World Table 7.1 (Not a Press Release)
Seasonal Adjustment: Not Seasonally Adjusted
Frequency:           Annual
Units:               Percent
Date Range:          1950-01-01 to 2010-01-01
Last Updated:        2012-09-17 11:56 AM CDT
Notes:               Exports plus Imports divided by GDP is the total trade as a percentage
                     of GDP.
                     
                     For more information and proper citation see
                     http://www.rug.nl/research/ggdc/data/pwt/pwt-7.1
                     
                     Source Indicator: openk

DATE              VALUE
1950-01-01  6.070079634
1951-01-01  6.192986234
1952-01-01  5.968079325
1953-01-01  5.915874505
1954-01-01  6.071196949
1955-01-01  6.364822907
1956-01-01  6.903687884
1957-01-01  7.199603974
1958-01-01  6.937939726
1959-01-01  7.131986979
1960-01-01  7.610813715
1961-01-01  7.459008663
1962-01-01  7.651529951
1963-01-01  7.668639563
1964-01-01  7.890295990
1965-01-01  7.913580252
1966-01-01  8.234363342
1967-01-01  8.460534177
1968-01-01  8.990587469
1969-01-01  9.221219645
1970-01-01  9.876082815
1971-01-01  9.906144159
1972-01-01 10.297353160
1973-01-01 10.760266970
1974-01-01 11.080362590
1975-01-01 10.413319380
1976-01-01 11.040646670
1977-01-01 11.276965920
1978-01-01 11.704899500
1979-01-01 11.985584840
1980-01-01 12.257574920
1981-01-01 12.189058320
1982-01-01 11.834891240
1983-01-01 11.870309890
1984-01-01 12.921753340
1985-01-01 13.033357630
1986-01-01 13.636962140
1987-01-01 14.268203850
1988-01-01 14.954889970
1989-01-01 15.541059480
1990-01-01 16.205301640
1991-01-01 16.777702920
1992-01-01 17.326832520
1993-01-01 17.810759250
1994-01-01 18.827143570
1995-01-01 19.996996790
1996-01-01 20.865960600
1997-01-01 22.439989420
1998-01-01 23.000253000
1999-01-01 23.716423190
2000-01-01 25.263976080
2001-01-01 24.085986070
2002-01-01 23.983613880
2003-01-01 24.158675740
2004-01-01 25.735804260
2005-01-01 26.526746420
2006-01-01 27.694068080
2007-01-01 28.631664140
2008-01-01 29.164930840
2009-01-01 26.982592480
2010-01-01 29.200184970