| Year | Amount of PRTR Chemical Substances Handled (ton) | Amount of PRTR Chemical Substances Emitted (ton) | Emissions Index (FY2000=100) (%) |
|---|---|---|---|
| 2000 | 3,745 | 2,082 | 100% |
| 2010 | 3,137 | 665 | 31.9% |
| 2011 | 1,931 | 679 | 32.6% |
| 2012 | 1,918 | 689 | 33.1% |
| 2013 | 3,241 | 1,370 | 65.8% |
| 2014 | 2,993 | 1,031 | 49.5% |