Given the task definition and input, reply with output. This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

Miami International Airport serves as the primary international airport of the Greater Miami Area. One of the busiest international airports in the world, Miami International Airport caters to over 35 million passengers a year. The airport is a major hub and the single largest international gateway for American Airlines. Miami International is the busiest airport in Florida, and is the United States' second-largest international port of entry for foreign air passengers behind New York's John F. Kennedy International Airport, and is the seventh-largest such gateway in the world. The airport's extensive international route network includes non-stop flights to over seventy international cities in North and South America, Europe, Asia, and the Middle East.
How many passengers use Miami International Airport annually?