"The estimated resident Indigenous population of Australia at 30 June 1991 was 351,000 people. In 2006, there were 517,000 people, representing 2.5% of the total Australian population. Between 1991 and 2006 the Indigenous population increased by 2.6% per year on average, compared with 1.2% for the total Australian population. The population of Indigenous Australians is projected to increase to between 713,300 and 721,100 people in 2021, at an average growth rate of 2.2% per year": Australian Bureau of Statistics, "Australia" (2009)