text: Measuring the Green Economy | U.S. Department of Commerce
  In this report, a product or service was considered "green" based on whether it conserves energy and other natural resources or reduces pollution. ESA analysts applied this definition to over 22,000 product codes from the 2007 Economic Census to estimate the share of green products and services in the U. S. economy. These data cover most of the private sector economy. We utilized information from other sources when Economic Census data were not available. We compared estimates from the 2007 Economic Census to estimates from the 2002 Economic Census for manufacturing products. The analysis in this report provides a starting point for measuring future progress as the green economy grows in the United States.