| Rank | Country | 2018 (Mt) | 2017 (Mt) | %2018/2017 |
| 1 | China | 928.3 | 870.9 | 6.6 |
| 2 | India | 106.5 | 101.5 | 4.9 |
| 3 | Japan | 104.3 | 104.7 | −0.3 |
| 4 | United States | 86.7 | 81.6 | 6.2 |
| 5 | South Korea | 72.5 | 71.0 | 2.0 |
| 6 | Russia | 71.7 | 71.5 | 0.3 |
| 7 | Germany | 42.4 | 43.3 | −2.0 |
| 8 | Turkey | 37.3 | 37.5 | −0.6 |
| 9 | Brazil | 34.7 | 34.4 | 1.1 |
| 10 | Iran | 25.0 | 21.2 | 17.7 |