メタン排出は、農業や工業メタン生産など、人間の活動に起因するものです。
| 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ベナン | 2,162.1 | 3,077.5 | 3,176.9 | 3,116.8 | 3,235.7 | 3,296.9 | 3,510.6 | 3,463.1 | 3,531.2 | 3,687.5 | 3,713.2 | 3,821.1 | 3,965.8 | 4,029.6 |
| ブルキナファソ | 6,143.2 | 8,419.1 | 11,009.1 | 12,514.1 | 12,751.3 | 12,795.8 | 13,165.3 | 13,442.6 | 13,619.6 | 14,301.6 | 14,502.1 | 14,640.5 | 15,021.6 | 15,408.3 |
| カーボベルデ | 76.2 | 78.1 | 83.8 | 88.2 | 89.2 | 90.4 | 91.8 | 93.1 | 94.4 | 95.8 | 88.0 | 88.5 | 89.1 | 93.2 |
| コートジボワール | 3,956.2 | 15,902.2 | 13,114.7 | 8,703.2 | 8,161.3 | 7,507.6 | 7,852.3 | 7,371.6 | 7,266.5 | 7,975.9 | 7,795.0 | 7,734.0 | 7,780.2 | 7,980.4 |
| ガーナ | 4,969.7 | 7,127.5 | 7,811.5 | 7,884.7 | 8,925.8 | 8,683.0 | 9,303.3 | 9,420.4 | 9,825.8 | 9,890.3 | 10,698.0 | 10,742.1 | 11,193.3 | 11,847.9 |
| ギニアビサウ | 739.3 | 839.7 | 936.0 | 1,115.6 | 1,101.4 | 1,197.8 | 1,195.5 | 1,141.2 | 1,212.9 | 1,200.6 | 1,190.4 | 1,238.3 | 1,249.7 | 1,261.1 |
| リベリア | 217.3 | 198.8 | 203.7 | 295.5 | 301.1 | 306.4 | 299.7 | 333.9 | 397.6 | 337.6 | 322.3 | 322.9 | 362.1 | 338.9 |
| マリ | 8,800.2 | 11,632.3 | 13,943.5 | 16,172.8 | 16,487.3 | 17,017.5 | 17,417.1 | 17,863.8 | 18,461.6 | 20,246.4 | 20,695.4 | 21,436.8 | 22,142.7 | 23,070.5 |
| ニジェール | 8,626.5 | 12,558.5 | 15,335.9 | 18,087.6 | 18,809.2 | 19,745.4 | 20,976.3 | 21,928.7 | 22,759.3 | 23,837.0 | 24,913.3 | 26,094.6 | 27,251.9 | 28,579.4 |
| ナイジェリア | 140,698.3 | 130,181.9 | 141,851.7 | 143,412.4 | 145,721.2 | 146,252.2 | 143,561.0 | 144,981.8 | 144,436.1 | 145,045.8 | 148,911.7 | 151,730.1 | 155,074.8 | 151,059.8 |
| セネガル | 6,440.5 | 8,501.6 | 8,544.0 | 9,508.8 | 9,725.6 | 9,574.4 | 9,844.7 | 9,914.2 | 10,066.2 | 10,691.9 | 10,904.7 | 10,918.3 | 11,393.6 | 11,762.8 |
| シエラレオネ | 2,114.5 | 1,645.1 | 2,856.4 | 3,031.9 | 3,264.7 | 3,695.0 | 3,635.4 | 3,839.0 | 3,664.9 | 3,880.0 | 3,851.0 | 4,451.8 | 3,550.2 | 3,591.1 |
| ガンビア | 3,809.9 | 739.4 | 840.1 | 1,353.0 | 1,049.3 | 1,154.3 | 1,219.0 | 1,260.1 | 1,394.1 | 1,270.1 | 1,295.1 | 1,151.0 | 1,316.5 | 1,346.3 |
| トーゴ | 1,496.7 | 1,814.6 | 2,296.0 | 2,205.6 | 2,464.3 | 2,418.2 | 2,575.3 | 2,532.2 | 2,746.8 | 2,632.1 | 2,680.3 | 2,715.7 | 2,808.9 | 3,039.9 |