Growth in the country's industrial output rose to a two-month high of 4.1 per cent in April this year, mainly lifted by the manufacturing sector. Growth in factory output, as measured by the Index of Industrial Production, had stood at 3.7 per cent in April last year. According to data released by the government, growth in manufacturing output, which constitutes over 75 per cent of the index, rose to 5.1 per cent in April this year. Production of capital goods, a barometer of investment demand, grew 11.1 per cent in April. Mining sector output grew 0.6 per cent, but electricity generation contracted 0.5 per cent during the month. Industrial growth for March has been revised upwards to 2.5 per cent, from 2.1 per cent estimated earlier.