The output of India’s six core infrastructure industries, which account for 26.68 per cent of the country’s total industrial output, grew by 7.1 per cent year-on-year (y-o-y) in January 2011, on account of healthy production of crude oil, petroleum refinery products and electricity. The six core sectors comprise crude oil, petroleum refinery products, coal, electricity, cement and finished steel. Petroleum refinery and crude oil output grew by 8.7 per cent and 10.8 per cent respectively in January 2011, up from 3.8 per cent and 9.8 per cent in the same period last year. The investment in infrastructure is likely to rise from 5.15 per cent of gross domestic product (GDP) during the Tenth Five Year Plan period (2002-07) to about 7.55 per cent during the Eleventh Five Year Plan (2007-12). A preliminary assessment suggests that investment in infrastructure during the Twelfth Five Year Plan (2012-17) would need to be of the order of about US$ 1,025 billion to achieve a share of 9.95 per cent as a proportion of GDP.