“…This approach is in line with overwhelming empirical evidence in recent years that the large fluctuations in the real price of oil have been driven by demand shocks (see, for example, Bodenstein and Guerrieri, 2011;Kilian, 2009;Kilian and Hicks, 2011;Kilian andMurphy, 2010, 2012). A number of recent DSGE studies have imposed more structure on the supply side of the crude oil market, often focusing on models of imperfect competition (see, for example, Nakov and Pescatori, 2010a, b;Balke, Brown, and Yu¨cel, 2010;Nakov and Nun˜o, 2011). Finding direct empirical evidence in favor of such models is difficult, given the paucity of relevant data (see, for example, Smith, 2005;Almoguera, Douglas, and Herrera, 2011).…”