4- in 2005, the federl reserve governor ben bernanke said in a speech” over the past decade a combination of diverse forces has created a significant increase in the global supply of saving- a global saving gult- which helps to explain both the increase in the US current account deficit ( a broad measure of the trade deficit) and the relatively low level of long term real interest rates in the world today” is this statement consistent with the models you have learned? explain.