Title:               Purchasing Power Parity over GDP for United States
Series ID:           PPPTTLUSA618NUPN
Source:              University of Pennsylvania
Release:             Penn World Table 7.1 (Not a Press Release)
Seasonal Adjustment: Not Seasonally Adjusted
Frequency:           Annual
Units:               National Currency Units per US Dollar
Date Range:          1950-01-01 to 2010-01-01
Last Updated:        2012-08-31 2:22 PM CDT
Notes:               Note: Over GDP, 1 US dollar (US$) = 1 international dollar (I$).
                     Purchasing power parity is the number of currency units required to
                     buy goods equivalent to what can be bought with one unit of the base
                     country. We calculated our PPP over GDP. That is, our PPP is the
                     national currency value of GDP divided by the real value of GDP in
                     international dollars. International dollar has the same purchasing
                     power over total U.S. GDP as the U.S. dollar in a given base year.
                     
                     For more information and proper citation see
                     http://www.rug.nl/research/ggdc/data/pwt/pwt-7.1
                     
                     Source Indicator: ppp

DATE       VALUE
1950-01-01     1
1951-01-01     1
1952-01-01     1
1953-01-01     1
1954-01-01     1
1955-01-01     1
1956-01-01     1
1957-01-01     1
1958-01-01     1
1959-01-01     1
1960-01-01     1
1961-01-01     1
1962-01-01     1
1963-01-01     1
1964-01-01     1
1965-01-01     1
1966-01-01     1
1967-01-01     1
1968-01-01     1
1969-01-01     1
1970-01-01     1
1971-01-01     1
1972-01-01     1
1973-01-01     1
1974-01-01     1
1975-01-01     1
1976-01-01     1
1977-01-01     1
1978-01-01     1
1979-01-01     1
1980-01-01     1
1981-01-01     1
1982-01-01     1
1983-01-01     1
1984-01-01     1
1985-01-01     1
1986-01-01     1
1987-01-01     1
1988-01-01     1
1989-01-01     1
1990-01-01     1
1991-01-01     1
1992-01-01     1
1993-01-01     1
1994-01-01     1
1995-01-01     1
1996-01-01     1
1997-01-01     1
1998-01-01     1
1999-01-01     1
2000-01-01     1
2001-01-01     1
2002-01-01     1
2003-01-01     1
2004-01-01     1
2005-01-01     1
2006-01-01     1
2007-01-01     1
2008-01-01     1
2009-01-01     1
2010-01-01     1