Methane emissions are those stemming from human activities such as agriculture and from industrial methane production.
| 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Brunei Darussalam | 1,414.8 | 1,849.9 | 1,995.8 | 1,922.3 | 1,972.8 | 1,924.2 | 1,763.7 | 1,741.3 | 1,668.8 | 1,656.7 | 1,721.4 | 1,686.5 | 1,637.3 | 1,538.9 |
| Cambodia | 12,142.0 | 13,952.6 | 16,210.7 | 18,190.3 | 18,960.7 | 18,411.7 | 18,266.4 | 17,775.7 | 17,666.3 | 17,905.7 | 18,279.1 | 18,302.1 | 18,056.8 | 17,836.4 |
| China | 763,744.0 | 807,417.2 | 901,769.1 | 1,065,645.8 | 1,112,586.9 | 1,113,082.9 | 1,136,038.6 | 1,149,171.2 | 1,147,403.8 | 1,107,003.4 | 1,116,767.2 | 1,147,167.9 | 1,163,215.2 | 1,186,285.2 |
| Indonesia | 280,038.5 | 339,713.8 | 317,297.9 | 312,449.7 | 319,401.1 | 316,506.5 | 318,017.3 | 323,344.6 | 319,717.6 | 318,960.4 | 325,926.4 | 335,362.6 | 339,612.8 | 333,994.9 |
| Japan | 36,979.3 | 33,316.6 | 31,415.4 | 29,737.1 | 29,682.1 | 29,530.7 | 29,221.8 | 28,663.1 | 27,895.7 | 27,574.6 | 27,414.2 | 26,580.9 | 26,155.3 | 25,783.3 |
| Korea, Rep. | 24,244.1 | 24,330.4 | 23,746.8 | 23,803.7 | 23,411.4 | 23,413.6 | 23,209.9 | 22,940.5 | 22,740.5 | 22,404.3 | 22,299.4 | 22,262.1 | 22,093.8 | 21,990.1 |
| Lao PDR | 4,826.5 | 5,377.1 | 5,914.0 | 6,952.5 | 6,716.3 | 7,259.0 | 7,244.1 | 7,395.6 | 7,585.1 | 7,853.8 | 7,823.8 | 7,609.6 | 7,731.5 | 8,011.3 |
| Malaysia | 19,889.0 | 26,237.9 | 30,841.5 | 33,243.7 | 33,298.5 | 34,092.6 | 35,807.9 | 36,770.5 | 37,665.7 | 37,742.2 | 37,498.6 | 37,943.1 | 38,069.2 | 37,175.6 |
| Myanmar | 40,496.2 | 50,350.4 | 57,784.2 | 65,148.7 | 63,472.7 | 63,285.8 | 64,070.4 | 65,076.1 | 66,530.7 | 67,622.8 | 70,796.2 | 72,161.3 | 72,567.8 | 72,110.0 |
| Philippines | 45,380.8 | 54,714.5 | 57,560.4 | 61,262.1 | 62,490.2 | 63,661.3 | 64,260.7 | 64,501.9 | 63,980.0 | 63,582.1 | 65,882.2 | 66,117.9 | 65,051.0 | 65,722.0 |
| Singapore | 1,282.6 | 1,744.4 | 2,284.8 | 3,157.6 | 3,299.0 | 3,436.5 | 3,576.7 | 3,716.0 | 3,856.5 | 3,957.6 | 4,060.4 | 4,152.0 | 4,251.3 | 4,347.7 |
| Thailand | 55,421.2 | 67,522.8 | 74,007.7 | 85,193.5 | 83,976.0 | 85,293.0 | 84,192.6 | 79,729.9 | 75,223.2 | 79,080.1 | 78,245.3 | 77,821.3 | 74,809.2 | 75,892.8 |
| Vietnam | 43,289.8 | 65,103.5 | 75,803.3 | 82,330.6 | 83,109.4 | 83,616.3 | 84,542.6 | 84,502.6 | 83,621.3 | 82,496.4 | 81,974.8 | 81,798.9 | 80,654.4 | 79,619.2 |