Use the surstan excel file attached

Assume you are in 2012, and Surfstan's local currency is the "wipeout". The wipeout has been fixed in a soft peg to the USD (USD 1 = 1 wipeout) since 2000. Indicate one missing variable from the data series provided that could be useful for your 2012 Country Risk Assessment Note (CRAN) given this new information regarding the exchange rate (i.e. period 2008 - 2015). Please explain in a paragraph (no more than 10 - 20 lines) why this variable is needed and how this would influence your CRAN and risk rating decision.