we are going to use fred data to calculate short-run output (sro). i downloaded data for real gdp (billions of chained 2012 dollars) and real potential gdp (billions of chained 2012 dollars) for years 2006-2008. actual real gdp (in trillions of usd) was 15.34, 15.63 and 15.60, respectively. real potential gdp (also in trillions of usd) was 15.28, 15.58 and 15.87, respectively. compute sro for each of the 3 years using the definition given in class: the difference between actual real gdp and potential real gdp (as a percentage of potential). consider year 2007. what was the difference between current real gdp and potential (y current - y potential) in billions of dollars? pick the closest value.