Portugal - Methane (CH4) emissions
| Date | CH4 Total Mt | CH4 Tons(CO2e) per capita |
|---|---|---|
| 2018 | 0.38 | 0.919 |
| 2017 | 0.38 | 0.920 |
| 2016 | 0.37 | 0.882 |
| 2015 | 0.36 | 0.875 |
| 2014 | 0.36 | 0.864 |
| 2013 | 0.36 | 0.847 |
| 2012 | 0.37 | 0.869 |
| 2011 | 0.38 | 0.902 |
| 2010 | 0.38 | 0.883 |
| 2009 | 0.39 | 0.908 |
| 2008 | 0.39 | 0.924 |
| 2007 | 0.42 | 0.977 |
| 2006 | 0.42 | 0.991 |
| 2005 | 0.41 | 0.964 |
| 2004 | 0.42 | 1.007 |
| 2003 | 0.43 | 1.035 |
| 2002 | 0.44 | 1.063 |
| 2001 | 0.44 | 1.056 |
| 2000 | 0.46 | 1.106 |
| 1999 | 0.48 | 1.171 |
| 1998 | 0.47 | 1.154 |
| 1997 | 0.46 | 1.130 |
| 1996 | 0.45 | 1.113 |
| 1995 | 0.43 | 1.071 |
| 1994 | 0.43 | 1.060 |
| 1993 | 0.41 | 1.027 |
| 1992 | 0.42 | 1.039 |
| 1991 | 0.41 | 1.035 |
| 1990 | 0.41 | 1.030 |
| 1989 | 0.40 | 1.009 |
| 1988 | 0.39 | 0.981 |
| 1987 | 0.39 | 0.975 |
| 1986 | 0.39 | 0.972 |
| 1985 | 0.38 | 0.956 |
| 1984 | 0.38 | 0.945 |
| 1983 | 0.40 | 0.996 |
| 1982 | 0.40 | 1.013 |
| 1981 | 0.39 | 0.996 |
| 1980 | 0.39 | 0.991 |
| 1979 | 0.38 | 0.968 |
| 1978 | 0.37 | 0.958 |
| 1977 | 0.35 | 0.919 |
| 1976 | 0.33 | 0.877 |
| 1975 | 0.34 | 0.910 |
| 1974 | 0.34 | 0.926 |
| 1973 | 0.35 | 0.967 |
| 1972 | 0.34 | 0.969 |
| 1971 | 0.34 | 0.965 |
| 1970 | 0.34 | 0.978 |