All Nippon Airways Co., Ltd. (ANA, 全日本空輸株式会社, Zen Nippon Kūyu Kabushiki gaisha), also known as Zennikkū (全日空), is the largest airline in Japan by revenues and passenger numbers. Its headquarters are located in Shiodome City Center in the Shiodome area of Minato ward of Tokyo. 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. In addition to its mainline operations, ANA controls several subsidiary passenger carriers, including its regional airline, ANA Wings and contract flattop, Air Nippon. Other subsidiaries include Air Do, a low-cost carrier operating scheduled service between Tokyo and cities in Hokkaido; 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.