The HILDA report is a body of work that has surveyed 9,000 Australian households every year, for the last 22 years. Here’s what they say has changed. The HILDA report is a body of work that has surveyed 9,000 Australian households every year, for the last 22 years. Here’s what they say has changed. Cost of Living, Communities, Economic Trends and Indicators, Population and Demographics, Women, Family and Relationships Latest business news