also, for comparison: http://www.informationisbeautiful.net/visualizations/billion-dollar-o-gram-2013/ http://www.informationisbeautiful.net/visualizations/bill

also, for comparison: http://www.informationisbeautiful.net/visualizations/billion-dollar-o-gram-2013/ http://www.informationisbeautiful.net/visualizations/billion...