Preliminary estimates for April indicate that the index decreased by 3.5 per cent (on a monthly average basis) in SDR terms, after decreasing by 1.7 per cent in March (revised). A decline in the iron ore price more than offset an increase in the coking coal price. Both the rural and base metals subindices decreased slightly in the month. In Australian dollar terms, the index decreased by 2.0 per cent in April.

Over the past year, the index has increased by 38.6 per cent in SDR terms, led by higher coking coal and iron ore prices. The index has increased by 36.1 per cent in Australian dollar terms.

Consistent with previous releases, preliminary estimates for iron ore, coking coal, thermal coal and LNG export prices are being used for the most recent months, based on market information. Using spot prices for the bulk commodities, the index rose by 3.4 per cent in April in SDR terms, to be 43.5 per cent higher over the past year.