| 年度 | 数值 | 单位 | 发布日期 |
| 2026 | 18990 | 千吨 | 2026-9 |
| 2025 | 19017 | 千吨 | 2026-9 |
| 2024 | 18368 | 千吨 | 2026-9 |
| 2023 | 17807 | 千吨 | 2026-9 |
| 2022 | 18217 | 千吨 | 2026-9 |
| 2021 | 18720 | 千吨 | 2026-9 |
| 2020 | 18203 | 千吨 | 2026-9 |
| 2019 | 18894 | 千吨 | 2026-9 |
| 2018 | 19654 | 千吨 | 2026-9 |
| 2017 | 19297 | 千吨 | 2026-9 |
| 2016 | 19256 | 千吨 | 2026-9 |
| 2015 | 20932 | 千吨 | 2026-9 |
| 2014 | 20441 | 千吨 | 2026-9 |
| 2013 | 20197 | 千吨 | 2026-9 |
| 2012 | 20443 | 千吨 | 2026-9 |
| 2011 | 20883 | 千吨 | 2026-9 |
| 2010 | 21005 | 千吨 | 2026-9 |
| 2009 | 20741 | 千吨 | 2026-9 |
| 2008 | 21282 | 千吨 | 2026-9 |
| 2007 | 21703 | 千吨 | 2026-9 |
| 2006 | 20994 | 千吨 | 2026-9 |
| 2005 | 20813 | 千吨 | 2026-9 |
| 2004 | 20630 | 千吨 | 2026-9 |
| 2003 | 21071 | 千吨 | 2026-9 |
| 2002 | 21094 | 千吨 | 2026-9 |
| 2001 | 20432 | 千吨 | 2026-9 |
| 2000 | 20420 | 千吨 | 2026-9 |
| 1999 | 20771 | 千吨 | 2026-9 |