| Year | Industrial Sources (kt) | Transportation (kt) | Residential Fuel Combustion (kt) | Miscellaneous (kt) | Total (kt) |
|---|---|---|---|---|---|
| 2011 | 16.1 | 12.9 | 20.3 | 8.8 | 58.1 |
| 2012 | 15.5 | 11.4 | 18.1 | 9.5 | 54.5 |
| 2013 | 15.8 | 10.7 | 20.6 | 8.3 | 55.4 |
| 2014 | 15.5 | 9.7 | 20.6 | 8.8 | 54.6 |
| 2015 | 15.6 | 9.2 | 18.6 | 10.6 | 54.0 |
| 2016 | 15.3 | 8.0 | 17.8 | 10.5 | 51.6 |
| 2017 | 15.0 | 8.4 | 18.4 | 8.5 | 50.3 |
| 2018 | 14.8 | 8.8 | 20.2 | 8.5 | 52.3 |
| 2019 | 13.7 | 8.6 | 19.9 | 8.7 | 50.9 |
| 2020 | 13.3 | 7.3 | 18.1 | 8.7 | 47.4 |