| Productivity and output have grown rapidly over many years Επιχ.Υποστήριξης1 #155847 For example, between 1930 and 2000 U.S. agricultural output quadrupled, while USDA index of aggregate inputs (land, labour, capital and other material inputs) remained essentially unchanged. |
- The percentage of U.S. disposable income spent on food prepared at home decreased from 22 percent in 1950 to 7 percent by the end of the century.
- US grain production has doubled in last 15 years (with overproduction leading to biofuels subsidies).
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