Development Data Group, The World Bank. 2013. 2013 World Development Indicators Online. Washington, DC: The World Bank. Available at: http://data.worldbank.org/indicator
Agriculture value added is the net output of the agriculture sector, including forestry, hunting and fishing, and cultivation of crops and livestock production, after adding up all outputs and subtracting intermediate inputs. Deductions for depreciation of fabricated assets and depletion and degradation of natural resources are not included in the calculation.
Agriculture corresponds to International Standard Industrial Classification (ISIC) divisions 1-5, while the origin of value added is determined by the ISIC, revision 3. Data is aggregated from the World Bank national accounts data, and OECD National Accounts data files.