, KP McKinsey & Company. 2) estimates based on data from IMF / OECD (@)E) www.kpcb.com USA Inc. | What Might a Turnaround Expert Consider? 393 USA's Share of Global GDP Has Declined from 33% in 1985 to 24% in 2010, While China / Brazil / Korea’s Shares Have Risen Share of World GDP, USA vs. China / Brazil / India,