GDP is the total value of goods and services made by Australian residents. The QoQ rate is its percent change from one quarter to the next on chain-volume GDP, which removes inflation. The series is seasonally adjusted and covers the whole economy. The headline series, GDP(A), is a simple average of 3 independent estimates from income, spending and production data. It uses many sources and early partial indicators, with no single survey. Its series starts with the September quarter of 1959. It measures production, not welfare, and is not national income. State detail each quarter is State Final Demand only, with no quarterly state product.