Question: What is the approximate capacity of passengers per year of the airport that is considered Condor Flugdienst's main base?

Context paragraphs:
Oulu Airport: Oulu Airport (IATA: OUL, ICAO: EFOU ; Finnish: "Oulun lentoasema" , Swedish: "Uleåborgs flygplats" ) is located in Oulu, Finland, 5.7 NM south-west of the city centre.  The airport is the second busiest in Finland after Helsinki-Vantaa Airport, as measured by the number of passengers (ca. 1 million in 2016).  There are around twenty daily flights to Helsinki.  Oulu Airport is also extensively used by the Finnish Air Force for training purposes.  Recently the old terminal was demolished for more apron space.  A major extension of the main terminal was completed in September 2011.  Four new jetbridge gates (gates 13–16) were constructed and the main terminal was expanded by 4300 m2 , raising the capacity of the airport to 1.5 million passengers per year.  The managing body of the airport is Finavia.  Oulu Airport has offered free wireless network access for passengers since May 2007.

Tijuana International Airport: Tijuana International Airport (IATA: TIJ, ICAO: MMTJ) , sometimes referred to as General Abelardo L. Rodríguez International Airport, in Tijuana, Baja California, Mexico, is Mexico's second northernmost airport after Mexicali International Airport.  The airport is located in the city's Otay Centenario borough, just immediately south of the U.S border.  It handled 4,853,797 passengers in 2015 and 6,332,500 in 2016.  It is the fifth busiest airport in Mexico after Mexico City, Cancun, Guadalajara and Monterrey airports.  The airport can handle up to 10 million passengers per year and 360 flights per day.

Condor Flugdienst Flight 3782: Condor Flugdienst Flight 3782 was an international charter flight from Stuttgart-Echterdingen Airport, West Germany to Adnan Menderes Airport, Turkey that crashed near Seferihisar, Turkey on 2 January 1988.  The flight was uneventful until final approach, when the aircraft, with the co-pilot in command, was cleared for an ILS approach to the Outer Marker (Non-Directional Beacon) and then on to Runway 35.  The aircraft's ILS was switched on after it had passed the NDB, therefore missing the turn.  The crew, confused, then followed the wrong side beam of the ILS, and it struck Dümentepe Hill, 10.5 nautical miles from the airport, killing all 16 people on board.

Ninoy Aquino International Airport Terminal 2: The Ninoy Aquino International Airport Terminal 2 (NAIA-2), in Parañaque, Metro Manila, Philippines, (also known as Centennial Terminal), has an area of 75000 m2 , and is located on NAIA Road.  It began construction on December 1995 and was inaugurated on May 1, 1999 and began operations in 1999.  It has been named the Centennial Terminal in commemoration of the centennial year of the declaration of Philippine independence.  The terminal was originally designed by Aéroports de Paris to be a domestic terminal, but the design was later modified to accommodate international flights.  It has a capacity of 2.5 million passengers per year in its international wing and 5 million in its domestic wing.  It is able to be modified to accommodate nine million passengers per year if needed.

Frankfurt Airport: Frankfurt Airport (IATA: FRA, ICAO: EDDF) (German: "Flughafen Frankfurt am Main" , also known as "Rhein-Main-Flughafen") is a major international airport located in Frankfurt, the fifth-largest city of Germany and one of the world's leading financial centres.  It is operated by Fraport and serves as the main hub for Lufthansa including Lufthansa CityLine and Lufthansa Cargo as well as Condor and AeroLogic.  The airport covers an area of 4942 acres of land and features two passenger terminals with a capacity of approximately 65 million passengers per year, four runways and extensive logistics and maintenance facilities.

List of the busiest airports in Europe: This is a list of the 100 busiest airports in :Europe, ranked by total passengers per year, including both terminal and transit passengers.  Data is for 2016 from a variety of sources, normally the national aviation authority statistics, or those of the airport operator.  The tables also show the percentage change in total passengers for each airport over the last year.  Data is sourced individually for each airport and normally originates from national aviation authority statistics, or those of the airport operator.  Lists of the rankings for 2015, 2014, 2013, 2012, 2011 and 2010 are also presented.

Ellinikon International Airport: Ellinikon International Airport, sometimes spelled "Hellinikon" () was the international airport of Athens, Greece for sixty years up until 2001, when it was replaced by the new Athens International Airport "Eleftherios Venizelos".  The grounds of the airport are located 7 km south of Athens, and just west of Glyfada.  It was named after the village of Elliniko (Elleniko), now a suburb of Athens.  The airport had an official capacity of 11 million passengers per year, but had served 13.5 million passengers per year during its last year of operations.

Condor Flugdienst: Condor Flugdienst GmbH, branded as Condor, is a German leisure airline based in Frankfurt.  It operates scheduled flights to leisure destinations in the Mediterranean, Asia, Africa, North America, South America and the Caribbean.  Its main base is at Frankfurt Airport from which most of its long-haul flights depart; secondary bases for Mediterranean flights are Munich Airport which also features long-haul flights, Hamburg Airport, Hannover Airport, Düsseldorf Airport, Stuttgart Airport, Leipzig/Halle Airport and Berlin Schönefeld Airport.

Kisumu International Airport: Kisumu International Airport is an airport in Kisumu, Kenya (IATA: KIS, ICAO: HKKI) .  It is the third-busiest airport in Kenya and the country's fourth international airport.  The airport has a new terminal with the capacity to handle 700 passengers an hour which translates to 2 million passengers per year.  In 2011 the length of the runway was extended from 2 km to 3.3 km giving the airport the capacity to handle large-capacity passenger and cargo aircraft.  The airport is set for a second phase of a 4.9 billion shilling expansion that will include the construction of a parallel taxiway, cargo apron and associated facilities.

List of the busiest airports in the former USSR: This is a list of the busiest airports in the Post-Soviet states (handling more than 1,000,000 passengers per year), ranked by total passengers per year, including both terminal and transit passengers.  Data is from provisional sources.

Supporting paragraphs: Condor Flugdienst Frankfurt Airport
Answer: 65 million