Australia’s headline inflation sank to its lowest level in more than three years in the September quarter, as lower energy prices and elevated interest rates eased price pressures in the economy. The annual consumer price index for the July-September period was 2.8%, or the lowest since the March quarter of 2021, the Australian Bureau of Statistics reported on Wednesday. That outcome compared with the 2.9% pace expected by economists and the 3.8% headline result for the June quarter. The underlying inflation rate – the trimmed mean that the Reserve Bank watches closely – came in at 3.5%. The result was