The borders of modern-day coincide with the ancient kingdom of Kalinga, which was invaded by the Mauryan Emperor Ashoka (which was again won back from them by King Kharavela) in 261 BCE resulting in the Kalinga War. The modern boundaries of Odisha were demarcated by the Indian government when Orissa Province was established on 1 April 1936, consisting of the Odia-speaking districts of Bihar and Orissa Province. The first of April is celebrated as Utkala Dibasa/Odisha Day. Cuttack was made the capital of the region by Anantavarman Chodaganga in c. 1135, after which the city was used as the capital by many rulers, through the British era until 1948. Thereafter, Bhubaneswar became the capital of Odisha. The economy of Odisha is the 16th-largest state economy in India with ₹5.86 trillion (US$73 billion) in gross domestic product and a per capita GDP of ₹127,383 (US$1,600). Odisha ranks 32nd among Indian states in Human Development Index.