From UBS:
Resurgent commodities lifted trade from a record deficit to a record surplus Australia’s basket of $A commodity prices has surged ~50% from a decade-low in Dec- 15 – led by the two largest exports, iron ore and coal. This has already seen a sharp turnaround from a record $4bn+ deficit in Dec-15, to a record $3½bn surplus in Dec- 16. In quarterly terms, trade switched from a 2.8% of GDP deficit in Q415 (the worst since Q108) to ~1% surplus in Q416, the best since the terms of trade peaked in 2011.
CAD already halved from a worrying 5½% of GDP in Q415, to 2¾% in Q316 At the same time, the net income deficit has narrowed from 2.8% of GDP in Q415 to 1½% in Q316. Hence, summing the trade & income deficits together, the current account deficit halved from a worrying 5½% of GDP in Q415 (the largest since 2009), to 2¾% in Q315, with a further narrowing to ~1% in Q416, the smallest since 1980.