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Table 4-45: Estimated National Emissions of Carbon Monoxide (Million short tons)

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 19701975198019851990199119921993199419951996199719981999200020012002200320042005200620072008200920102011(R) 2012(R) 2013(R) 201420152016
TOTAL all sources204.04188.40185.41176.85154.19147.13140.90135.90133.56126.78128.86117.91115.38114.54114.47106.26102.0399.5997.1588.5585.8483.1379.6672.7573.7773.7671.0768.3763.3061.1358.98
Highway vehicles163.23153.56143.83134.19110.26104.9899.7194.4389.1683.8878.6175.8573.2468.7168.0663.4851.6148.6845.7542.8340.0537.2733.1627.4428.2427.3625.5223.6921.8619.8517.87
Off-Highway11.3714.3316.6919.0321.4521.9322.4222.9023.3923.8724.3623.6723.6923.3224.1824.6822.6222.3822.1421.9020.3718.8417.8815.9215.3514.9514.4113.8613.3213.1512.99
Fuel combustion4.634.487.308.495.515.866.155.595.525.934.344.334.335.544.784.835.475.365.245.134.884.634.384.454.524.604.444.284.134.134.13
Industrial processesa9.847.546.955.284.774.624.554.654.614.613.643.803.812.552.632.762.242.172.102.031.931.841.741.821.891.972.052.142.222.222.22
Waste disposal and recycling7.063.232.301.941.081.121.141.251.231.192.902.953.123.021.851.851.591.581.571.551.501.441.381.291.201.111.461.812.162.162.16
Miscellaneous7.915.268.347.9311.128.626.937.089.667.3015.027.327.1811.4112.968.6818.4919.4120.3415.1117.1119.1221.1221.8422.5623.7823.1822.5919.6219.6219.62

KEY: R = revised.

a Industrial processes consists of chemical and allied product manufacturing, metals processing, petroleum and related industries, other industrial processes; and solvent utilization, storage, and transport.

NOTE

Details may not add up to totals due to rounding in the source.

SOURCE

U.S. Environmental Protection Agency, Air Emissions Inventories, Air Pollutant Emissions Trends Data, available at https://www.epa.gov/air-emissions-inventories/air-pollutant-emissions-tr... as of Mar. 3, 2017.

Updated: Tuesday, May 23, 2017