Prescription-drug sales in emerging markets will reach $400B in 2020, according to IMS; this is roughly the same amount as the current combined sales in the US and the big-5 countries of Europe (Germany, France, UK, Italy, Spain). Source: http://www.bloomberg.com/news/2011-04-03/glaxo-faces-war-for-talent-in-emerging-market-race-with-pfizer.html