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).