GDP, The Music Video
The time on screen for each country is proportional to its Gross Domestic Product.
GDP figures are from the United Nations for 2013 from Wikipedia. Flag images are also from Wikipedia via the handy Google region-flags project. Music is "Money to Burn" by Alex (cc).
(Related: West of West Portal; Mandelbrot Spin Zoom; West Portal Timelapse of Timelapses)
(You might also like: Remnants in the Sunset; Air Gap; Fixing the Washington Post Democratic Candidates Quiz)