We account for the price and quantity components of a decomposition of the expression for a GDP increase accross periods. Our linear measure is compared with Irving Fisher s multiplicative measure. Where technical progress enters is noted.

GDP, the leading economic measurement, is outdated and misleading. . . . It’s like grading a corporation based on today’s cash flow and forgetting to depreciate assets and other costs. – Joseph Stiglitz, “Good Numbers Gone Bad,” Fortune, October 2, 2006.

In the decade leading to the recent commodity boom, which peaked in 2007-08, several resource-rich, low-income countries displayed high rates of gross domestic product (GDP) growth while social indicators did not improve significantly. It is well known that, in itself, the widely tracked GDP may...