 An academic study by researchers at Wellesley College and Carnegie Mellon University found that public awareness of the initiative corresponds with an increase in French iTunes sales, far higher than in any other European country over the same period.Accounting for the fact that our independent variable is in log terms, these estimates indicate that iTunes track sales units rose about 25.5% in the control group after March 1, 2009 but by 48% in France, indicating that French iTunes track sales were 22.5% higher on average than they would have been in the absence of HADOPI.Similarly, album sales units rose by 42% in the control group but 67% in France, indicating that HADOPI increased iTunes album sales an average 25% per week in France.