Trade Balance is the market name for International Trade in Goods, Australia (catalogue 5368.0) from the Australian Bureau of Statistics (ABS, the national statistics office). It reports the balance on goods, meaning goods credits (exports, positive entries) minus goods debits (imports, negative entries). Coverage is Australia's economic territory on a balance of payments basis (BoP, ownership based recording) under BPM6 (the global manual for external accounts).
Quarterly detail sits in publication 5302.0, and key series run back to 1971 and 1988. It uses full customs declarations, with no sample, and excludes monthly services and the current account (the wider external balance).