gdp = 400*(log(GDPC1) - log(L.GDPC1))
Based on FRED mnemonic GDPC1
oil = 100*(log(realoilq) - log(L.realoilq))
Define realoilq as quarterly average of realoilm
Define realoilm = MCOILWTICO / PCEPI (monthly)
Based on FRED mnemonics MCOILWTICO and PCEPI (monthly)
Retrieved 2013-01-19
Economic data from St. Louis Fed's FRED database.