Head of State: Emperor Akihito Head of Government: Prime Minister Shinz Abe Capital : Tokyo Language : Japanese Currency : Yen Area: 377,972.3 km2 Population: 126.9 million (2015) GDP at current market prices : USD 4,123.3 billion (2015) GDP per capita: USD 32,485.5 (2015) Website:Ministry of Foreign Affairs of Japan