Initial evaluations for April specify that the index is declined by an average of 3.8% per month in SDR terms, due to the decrease in Iron ore and coking coal prices. In terms of AUD, the index dropped by 3% in April.
During the last twelve months, the index has declined by 1.4% in SDR terms, as a result of lower iron ore prices. The index price raised up by 3.1% in Australian dollar terms.
Refer to the graph below for more information:
Source: Index of Commodity Prices, RBA