GDP or gross domestic product growth in the July-September quarter rebounded to 6.3 per cent from a year earlier. Economists polled by Reuters had predicted the economy to 6.4 per cent in the September quarter. A Bloomberg survey of economists also estimated India's GDP to expand at 6.4 per cent. GDP growth had slowed to a three-year low of 5.7 per cent in the April-June quarter, hit by destocking ahead of the July 1 rollout of the goods and services tax (GST) regime and the lingering impact of demonetisation.