Since the 1980s, Karnataka has emerged as the pan-Indian leader in the field of IT (information technology). In 2007, there were nearly 2,000 firms operating in Karnataka. Many of them, including two of India's biggest software firms, Infosys and Wipro, are also headquartered in the state. Exports from these firms exceeded in 2006–07, accounting for nearly 38% of all IT exports from India. The Nandi Hills area in the outskirts of Devanahalli is the site of the upcoming $22 billion, 50 km2 BIAL IT Investment Region, one of the largest infrastructure projects in the history of Karnataka. All this has earned the state capital, Bangalore, the sobriquet "Silicon Valley of India".