Sector totals from the EPA NEI2014 webpage. Click on the chart to zoom.
NEI2014v2NEI2014v1 Nitrogen Oxides Emissions NEI2014v2 Volatile Organic Compound Emissions NEI2014v2 Volatile Organic Compound Emissions (without Biogenics) NEI2014v2 Ammonia Emissions NEI2014v2 Sulfur Dioxide Emissions NEI2014v2 Fine Particulate Matter Emissions