# Two Thousand Years of Economic Statistics: World Population, GDP and PPP

## Excerpt

Two Thousand Years of Economic Statistics presents historical statistics in six sections: (1) Population, (2) GDP Per Capita, (3) GDP, (4) Population Growth Rates, (5) GDP Per Capita Growth Rates, (6) GDP Growth Rates.

The advantage of this work is that it contains data generally not available elsewhere. It gives statistics for two groups of countries within their 2007 borders. First, since year 1950 (for 1950, 1960, 1970, 1980, 1990, 2000, and 2007), it provides statistical data for all countries of the world (232 countries). Second, since the first year AD (for 0001, 1000, 1500, 1600, 1700, 1820, 1870, 1880, 1890, 1900, 1913, 1920, 1929, and 1938), it provides data for a smaller group of countries (133 countries).

This book is based on the groundbreaking works of Angus Maddison but it differs from his books in that it gives data up to the most recent year and calculates GDP (gross and per capita) in the prices of the most recent year. For recent years I use the World Bank, CIA, and Encyclopedia Britannica as primary sources. But, despite my great debt to these sources, the preponderance of data in the book is not directly cited from them but rather are the result of original calculations. Among other computational techniques, I use a new logarithmic interpolation which takes into account cross-country statistical distortions when calculating in the prices of the most recent year. For every line of data (for every country each year) I provide a note of the technique used in obtaining my estimate (i.e., proxy, exponential interpolation, direct estimate with source citation, etc.).

The statistics provided in these pages are complementary to those in my annual Quality of Life, Balance of Powers, and Nuclear Weapons. While the foregoing gives an updto-date snapshot of the world in statistics, the present work sets current population and GDP data in a historical perspective.

SOURCES

Where the source is the same for all the countries in a table, it is noted in a footnote. Otherwise, sources are shown in the form Year(Source) or Year(Source A/ Source B), where the Sources are one of the following:

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