| 年度 | 数值 | 单位 | 发布日期 |
| 2026 | 6795 | 千吨 | 2026-9 |
| 2025 | 7100 | 千吨 | 2026-9 |
| 2024 | 7436 | 千吨 | 2026-9 |
| 2023 | 7567 | 千吨 | 2026-9 |
| 2022 | 7957 | 千吨 | 2026-9 |
| 2021 | 9000 | 千吨 | 2026-9 |
| 2020 | 9466 | 千吨 | 2026-9 |
| 2019 | 9866 | 千吨 | 2026-9 |
| 2018 | 10300 | 千吨 | 2026-9 |
| 2017 | 10520 | 千吨 | 2026-9 |
| 2016 | 10625 | 千吨 | 2026-9 |
| 2015 | 10864 | 千吨 | 2026-9 |
| 2014 | 11426 | 千吨 | 2026-9 |
| 2013 | 11488 | 千吨 | 2026-9 |
| 2012 | 11378 | 千吨 | 2026-9 |
| 2011 | 11085 | 千吨 | 2026-9 |
| 2010 | 11249 | 千吨 | 2026-9 |
| 2009 | 11610 | 千吨 | 2026-9 |
| 2008 | 11762 | 千吨 | 2026-9 |
| 2007 | 12262 | 千吨 | 2026-9 |
| 2006 | 13175 | 千吨 | 2026-9 |
| 2005 | 13713 | 千吨 | 2026-9 |
| 2004 | 14106 | 千吨 | 2026-9 |
| 2003 | 13660 | 千吨 | 2026-9 |
| 2002 | 14142 | 千吨 | 2026-9 |
| 2001 | 13444 | 千吨 | 2026-9 |
| 2000 | 12658 | 千吨 | 2026-9 |
| 1999 | 13362 | 千吨 | 2026-9 |
| 1998 | 14550 | 千吨 | 2026-9 |
| 1997 | 14730 | 千吨 | 2026-9 |
| 1996 | 16000 | 千吨 | 2026-9 |
| 1995 | 17181 | 千吨 | 2026-9 |
| 1994 | 18138 | 千吨 | 2026-9 |
| 1993 | 18377 | 千吨 | 2026-9 |
| 1992 | 19114 | 千吨 | 2026-9 |
| 1991 | 22409 | 千吨 | 2026-9 |
| 1990 | 24360 | 千吨 | 2026-9 |
| 1989 | 24237 | 千吨 | 2026-9 |
| 1988 | 24095 | 千吨 | 2026-9 |