Industrial output registered an 11.5 per cent growth in May, growing in double digits for the eighth straight month, on good showing by manufacturing, particularly capital and consumer goods. This is mainly due to 12.3 per cent expansion registered by the manufacturing sector. Data on the country's index for industrial production (IIP) released in New Delhi today by the commerce and industry ministry showed that while mining sector grew by 8.7 per cent that of power generation expanded by 6.4 per cent. Within manufacturing, capital goods production rose by 34.3 per cent in May against a negative growth rate of 3.6 per cent a year ago.Consumer durables output rose by 23.7 per cent during the month under review against 13.2 per cent in the same period last year. The other two sectors, mining and electricity, expanded by 8.7 per cent and 6.4 per cent in May, respectively against a growth rate of 3.4 per cent and 3 per cent in the same period last year. According to the data, of the 17 industries, as many as 15 showed positive growths in May.The industrial output for April was revised downwards to 16.52 per cent from provisional figures of 17.6 per cent earlier. The fresh data comes against the backdrop of the Reserve Bank of India (RBI) hiking its short term lending rates for banks by 25 basis points earlier this month to suck excess liquidity out of the system, ahead of the monetary policy review on the 27th of this month. This was the third time this year that the apex bank hikes its rates since it decided to tighten its monetary policy – first on Jan 29, followed by another one on 19th of March.