Mexico and the World
Vol. 15, No 6 (Fall 2010)
http://www.profmex.org/mexicoandtheworld/volume15/6fall2010/200 countries.html

In 200 Countries, Two Gaps Narrow, 1810-2010:
(1) Poor/Sick, (2) Rich/Healthy
(Convergence of 1. Social Conditions [Life Expectancy], and 2. Income [GDP Per Capita In Terms of Purchasing Power of Parity], ’ BBC, November 26, 2010

By Hans Rosling (Karolinska Institutet, Stockholm, Sweden)
BBC, November 26, 2010

View the Link

http://www.youtube.com/watch?v=jbkSRLYSojo

Editorial Note:

For analysis of GDP calculated in terms of PPP (Purchasing Power Parity) compared to GDP calculated in terms of direct exchange values, see two sources:

I-a. “Un Método Proporcional para Estimar la Brecha del PIB entre Estados Unidos y América Latina a partir de 1940,”
Por James W. Wilkie y Michael Ray (2006)
http://www.profmex.org/mexicoandtheworld/volume11/2spring06/2index06.html

I-b. “A Proportional Approach to Measuring the U.S.-Latin American GDP ‘Gap’ Since 1940.”
By Michael Ray and James Wilkie (2002)
http://www.profmex.org/mexicoandtheworld/volume7/1winter02/ray.html

II. “Comparing GDP Across Countries,”
SUU Macoblog, 1-2011, by D. Tufte
http://suumacroblog.blogspot.com/2011_01_01_archive.html