You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Egypt

Context:
Foreign direct investment (FDI) in Egypt increased considerably before the removal of Hosni Mubarak, exceeding $6 billion in 2006, due to economic liberalisation and privatisation measures taken by minister of investment Mahmoud Mohieddin.[citation needed] 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.

Question:
How much had FDI increased to in 2006?

$6 billion