List of busiest airports by international passenger traffic

Columns: Rank | Airport | Location | Code ( IATA/ICAO ) | Total passengers | % change
15 | Taoyuan International Airport | Dayuan , Taoyuan , Taiwan | TPE/RCTP | 28,608,274 | 10.2% | 16 | Madrid-Barajas Airport | Madrid , Comunidad de Madrid , Spain | MAD/LEMD | 27,711,197 | 9.5% | 17 | John F. Kennedy International Airport | Queens , New York City , New York , United States | JFK/KJFK | 26,530,698 | 5.9% | 18 | Leonardo da Vinci-Fiumicino Airport | Fiumicino , Rome , Italy | FCO/LIRF | 25,069,617 | 0.6% | 19 | Barcelona-El Prat Airport | El Prat de Llobregat , Barcelona , Catalonia , Spain | BCN/LEBL | 25,003,256 | 5.8% | 20 | Zurich Airport | Rümlang / Oberglatt , Bülach / Dielsdorf , ZH , Switzerland | ZRH/LSZH | 24,227,178 | 0.4%

Example questions:
What is the code of the one of the busiest airports by international passenger traffic that has been in commercial operation since 1998 ? | What is the code of the airport that is the second-busiest airport by international passenger traffic in Europe ? | What is the code of the airport that is the second busiest airport in the world by international passenger traffic ? | What is the code of the one of the busiest airports by international passenger traffic that is currently rated the World 's Best Airport by Skytrax ?

Answers:
HKG/VHHH | CDG/LFPG | LHR/EGLL | SIN/WSSS