I want to know the answer to the following question:
What has been the change in foreign exhange reserves since 2011?
All the background I'm provided with is that "Since the fall of Hosni Mubarak in 2011, Egypt has experienced a drastic fall in both foreign investment and tourism revenues, followed by a 60% drop in foreign exchange reserves, a 3% drop in growth, and a rapid devaluation of the Egyptian pound.". Is that enough to answer the question?