The Bureau of Economic Analysis calculates a number of different measures of inflation​ –the GDP​ Deflator, the Consumer Price​ Index, the Wholesale Price​ Index, etc.. Given​ that, which of the following is an accurate description of the​ question, "According to the Bureau of Economic​ Analysis, what has been the average annual level of inflation​ (as measured by the GDP​ Deflator) over the past 10​ years?