All Nippon Airways Co., Ltd. (全日本空輸株式会社, Zen Nippon Kūyu Kabushiki gaisha, TYO: 9202), also known as Zennikkū (全日空) or ANA, is the largest airline in Japan on the basis of fleet size. Its headquarters are located at Shiodome City Center in the Shiodome area of Minato, Tokyo, Japan. It operates services to both domestic and international destinations and had more than 20,000 employees as of March 2016. In May 2010, ANA's total passenger traffic was up year-on-year by 7.8%, and its international services grew by 22% to 2.07 million passengers in the first five months of 2010. ANA's main international hubs are at Narita International Airport outside Tokyo and Kansai International Airport outside Osaka. Its main domestic hubs are at Tokyo International Airport (Haneda), Osaka International Airport (Itami), Chūbu Centrair International Airport (near Nagoya), and New Chitose Airport (near Sapporo).In addition to its mainline operations, ANA controls several subsidiary passenger carriers, including its regional airline, ANA Wings and charter carrier, Air Japan. Additional smaller carriers include Air Do, a low-cost carrier operating scheduled service between Tokyo and cities in Hokkaido; Vanilla Air, a low-cost carrier serving resort and selected international destinations; and Allex Cargo (ANA Cargo), the freighter division operated by Air Japan. ANA is also the largest shareholder in Peach, a low-cost carrier joint venture with Hong Kong company First Eastern Investment Group. In October 1999, the airline became a member of Star Alliance. On 29 March 2013, ANA was named a 5-Star Airline by Skytrax. On 27 April 2018, ANA announced ANA Business Jet Co., Ltd., a joint venture with Sojitz to offer private jet charter flights.