GDP (Current Exchange Rate) Gross Domestic Product — GDP — may have its limits. But it's a useful, broad measure for looking at national economies. It's basically the total dollar value of all of the goods and services a country produces in a year.
Kakadu plum (Terminalia ferdinandiana) The world's richest source of Vitamin C is found in this Northern Territory native fruit. The plum has 50 times the Vitamin C of oranges, and was a major source of food for tribes in the area