13.The article titled "Cocoa Cartel Stirs Up Global Chocolate Market" describes how large national producers of cocoa are attempting to form a cartel.The plan seems to be that each government of an exporting country would control the marketing of the nation's crop, thereby being able to limit sales to an agreed quantity. If each government is considered a "producer", using the spreadsheet data, calculate the "concentration ratio" for the top 10 producers in the industry and enter the answer on the spreadsheet in percent form to two decimals, for example as 65.55% or 42.35%.

Concentration Ratio: