Context: The Greater Mexico City has a gross domestic product (GDP) of US$411 billion in 2011, making Mexico City urban agglomeration one of the economically largest metropolitan areas in the world. The city was responsible for generating 15.8% of Mexico's Gross Domestic Product and the metropolitan area accounted for about 22% of total national GDP. As a stand-alone country, in 2013, Mexico City would be the fifth-largest economy in Latin America—five times as large as Costa Rica's and about the same size as Peru's.

Question: How big is Mexico City's GDP?
Answer: US$411 billion

Question: How much bigger is Mexico City's GDP's than Costa Rica's?
Answer: five times

Question: What percent of the Mexican GDP is the metropolitan area of Mexico City responsible for?
Answer: 22%

Question: Which country has about the same size GDP as Mexico city?
Answer: Peru