Applying weights drawn from the value of production in 2011 suggests that real commodity prices have increased by 252.41% from 1900, 191.77% from 1950, and 46.23% from 1975. Of course, this result is largely driven by energy products. Applying weights drawn from the value of production in 2011 but which exclude energy suggests that real commodity prices have still been on the rise, having increased by 7.76% from 1900, 58.44% from 1950, and 1.97% from 1975. Applying weights drawn from the value of production in 2011 but which exclude both energy and precious metals suggests that real commodity prices have a more mixed record, declining by 3.94% from 1900, increasing by 39.91% from 1950, and declining again by 10.97% from 1975. Finally, applying equal weights (but including both energy and precious metals), real commodity prices have increased 2.01% from 1900, have increased 44.18% from 1950, and have decreased by 3.93% from 1975. Cumulatively, the picture emerging from this exercise is a clear pattern of rising real commodity prices from at least 1950.