The opening question to most undergraduate macroeconomics courses usually is, "Why are some countries rich and others poor?" The lecturer will then probably dive into all of the usual suspects behind economic growth--natural resources, technological innovation, savings rate--without mention of perhaps the most primal of measurements: penis size.
That's right, penis size. In a study published today, the University of Helsinki's Tatu Westling points out a surprising strong correlation between a country's GDP growth rate and average penile length. As the chart above shows, countries that averaged smaller penis sizes grew at a faster rate than their larger counterparts between 1960 and 1985. Every centimeter increase in penis size accounted for a 5 to 7 percent reduction in economic growth. The study also showed that overall GDP was at its highest in countries with average-sized penises with GDP falling at the extremes of penis length.http://www.theatlanticwire.com/global/2011/07/chart-penile-length-leads-little-economic-growth/40117/On a more personal note, this does explains why all the best endowed guys are poor.