Australia's wine exports have passed the annual 500m litre benchmark - about 25 litres for every Australian - for the first time.

The nation's Wine and Brandy Corporation logged year-to-year end of May export figures at 503m litres.

In 1986 sales were just 11m litres. In 1993 when the boom took off they were still at the 100m litre level. Sales to the UK and US continue to dominate.

For the year to the end of May, total wine exports were valued at A$2.4 billion (US$1.6 billion).