New Delhi, Jul 25 India will need infrastructure investment to the tune of USD 4.5 trillion by 2040, making it the second-largest market in Asia after China, says a report by G20’s Global Infrastructure Hub. The report — Global Infrastructure Outlook — outlines infrastructure investment requirements globally and individually for 50 countries and seven sectors till 2040. In terms of future needs, the second-largest infrastructure market in Asia after China is India, the report said, adding that the country’s GDP per head stands at USD 1,600 and is forecast to rise to USD 4,800 by 2040, which is still way below China’s current level of USD 8,000. “As such, while population growth in India is expected to drive significant demand for infrastructure over the next 25 years, in absolute terms, this infrastructure requirement will…