| 年度 | 数值 | 单位 | 发布日期 |
| 2026 | 3395 | 千吨 | 2026-9 |
| 2025 | 3449 | 千吨 | 2026-9 |
| 2024 | 3300 | 千吨 | 2026-9 |
| 2023 | 3043 | 千吨 | 2026-9 |
| 2022 | 2800 | 千吨 | 2026-9 |
| 2021 | 3149 | 千吨 | 2026-9 |
| 2020 | 3512 | 千吨 | 2026-9 |
| 2019 | 3887 | 千吨 | 2026-9 |
| 2018 | 4401 | 千吨 | 2026-9 |
| 2017 | 4449 | 千吨 | 2026-9 |
| 2016 | 4280 | 千吨 | 2026-9 |
| 2015 | 4350 | 千吨 | 2026-9 |
| 2014 | 4730 | 千吨 | 2026-9 |
| 2013 | 4918 | 千吨 | 2026-9 |
| 2012 | 4716 | 千吨 | 2026-9 |
| 2011 | 4615 | 千吨 | 2026-9 |
| 2010 | 4793 | 千吨 | 2026-9 |
| 2009 | 7089 | 千吨 | 2026-9 |
| 2008 | 7197 | 千吨 | 2026-9 |
| 2007 | 7357 | 千吨 | 2026-9 |
| 2006 | 5909 | 千吨 | 2026-9 |
| 2005 | 7001 | 千吨 | 2026-9 |
| 2004 | 7444 | 千吨 | 2026-9 |
| 2003 | 6713 | 千吨 | 2026-9 |
| 2002 | 5914 | 千吨 | 2026-9 |
| 2001 | 8444 | 千吨 | 2026-9 |
| 2000 | 7900 | 千吨 | 2026-9 |
| 1999 | 9500 | 千吨 | 2026-9 |
| 1998 | 10751 | 千吨 | 2026-9 |
| 1997 | 10980 | 千吨 | 2026-9 |
| 1996 | 11800 | 千吨 | 2026-9 |
| 1995 | 13681 | 千吨 | 2026-9 |
| 1994 | 14318 | 千吨 | 2026-9 |
| 1993 | 14477 | 千吨 | 2026-9 |
| 1992 | 15108 | 千吨 | 2026-9 |
| 1991 | 17927 | 千吨 | 2026-9 |
| 1990 | 19488 | 千吨 | 2026-9 |
| 1989 | 19147 | 千吨 | 2026-9 |
| 1988 | 17830 | 千吨 | 2026-9 |