With relatively robust growth prospects, the Indian economy is expected to expand by 7.2 per cent this fiscal but difficulty in passing key structural reforms and large non-performing loans are holding it back, says Paris-based think tank OECD.However, the Organisation for Economic Cooperation and Development (OECD) today cut the global growth forecast for this year to 2.9 per cent citing a further sharp downturn in emerging market economies and world trade.The latest growth estimate for India is same as the forecast made in September by the think tank.In the current financial year (ending March 2016), India is estimated to grow 7.2 per cent, followed by 7.3 per cent in 2016-17 and 7.4 per cent in 2017-18 period, as per OECD.Brazil and Russia have experienced recessions and will not return to positive growth in annual terms until 2017.The think tank said China's growth is expected to slow to 6.8 per cent this year and continue to decline gradually reaching 6.2 per cent by 2017 as activity rebalances towards consumption and services.