The following is documentation for Michael Pakko and Patricia Pollard's Review article,
  "For Here or To Go?  Purchasing Power Parity and the Big Mac."  This article appears in
  the St. Louis Review, January/February 1996.  Questions and comments should be
  referred to Kelly Morris at 314-444-8519 or morris@stls.frb.org.
  
  Raw data series taken from issues of the Economist are contained in the accompanying
  Lotus, version four, spreadsheet file, JF96PP.WK4.  Big Mac data refers to the Economist
  data.  Other data are taken from the Penn World Tables (PWT), version 5.6, data set
  which can be obtain online at http://nber.harvard.edu/ , the "Prices and Earnings Around
  the Globe," 1994 Edition, from the Union Bank of Switzerland, the IMF's International
  Financial Statistics or the International Economic Trends from FRB-St. Louis.  See the
  spreadsheet for the raw and modified data.
  
       Table 1:
  Big Mac -- PPP/((NCU/$)*100) applied to raw data
       PWT      -- no changes to raw data
       
       Table 2:
  Big Mac data -- a summary of data reported in Table A1
       Table A1:
  Big Mac data -- local currency valuations taken from raw data worksheet
       
       Table A2:
  Big Mac data
       Inflation differential formula --
       ln(((cBigMac/NCU)*(pUS BigMac/NCU)) /
       ((pBigMac/NCU)*(cUSBigMac/NCU)))
       Change in exchange rate formula -- 
       ln((cNCU/$)/(pNCU/$))
       c is current year, p is previous year, US is the United States value
       
       Figure 1:
  exact data from Table 1
       
       Figure 2:
       Big Mac data -- no changes to raw data
       Relative Prices is the PPP value
       
       Figure 3:
       Big Mac data from Table A2 with no additional changes
       
       Figure in Shaded Box:
       Big Mac data using a German Valuation formula -- 
       ((BM/NCU)/(G BM/NCU))*(1/((NCU/$)*(1/(G NCU/$)))*100
       G is the German value
       
       Figure 4:
       See the accompanying spreadsheet for the data.
       
       Figure 5:
       Big Mac data -- Pass-through Price is begins at the same point as the Acutal Price
       following this formula
       (cER/fER)*fBMP,
       where c is the current year, ER is the exchange rate, f is the fixed/beginning year,
       BMP is the Big Mac price
       
       Figure 6:
       See the accompanying spreadsheet for the data.