Australia’s economy expanded at its fastest pace in over four years in the first quarter, boosted by strong household consumption growth, but economists say they are doubtful the “lucky country” will be able to extend elevated levels of growth in the coming quarters as spending moderates.

Gross domestic product (GDP) rose 1.3 percent in the first three months of the year, more than double the 0.5 percent increase forecast and a compared with the first quarter of 2011.