| Environment |
| Year | Total Emissions | Target |
|---|---|---|
| 1990 | 72,446 | |
| 1991 | 77,569 | |
| 1992 | 75,663 | |
| 1993 | 76,468 | |
| 1994 | 77,966 | |
| 1995 | 68,883 | |
| 1996 | 69,067 | |
| 1997 | 68,008 | 69,067 |
| 1998 | 66,927 | 68,376 |
| 1999 | 63,980 | 67,686 |
| 2000 | 61,927 | 66,304 |
| 2001 | 64,923 | |
| 2002 | 63,542 | |
| 2003 | 62,160 | |
| 2004 | 60,779 | |
| 2005 | 59,398 | |
| 2006 | 58,016 | |
| 2007 | 56,635 | |
| 2008 | 55,254 | |
| 53,872 |