| 年度 | 数值 | 单位 | 发布日期 |
| 2016 | 1554 | 千吨 | 2026-9 |
| 2015 | 1473 | 千吨 | 2026-9 |
| 2014 | 1407 | 千吨 | 2026-9 |
| 2013 | 1322 | 千吨 | 2026-9 |
| 2012 | 1152 | 千吨 | 2026-9 |
| 2011 | 1112 | 千吨 | 2026-9 |
| 2010 | 1103 | 千吨 | 2026-9 |
| 2009 | 1049 | 千吨 | 2026-9 |
| 2008 | 1041 | 千吨 | 2026-9 |
| 2007 | 951 | 千吨 | 2026-9 |
| 2006 | 859 | 千吨 | 2026-9 |
| 2005 | 765 | 千吨 | 2026-9 |
| 2004 | 710 | 千吨 | 2026-9 |
| 2003 | 678 | 千吨 | 2026-9 |
| 2002 | 673 | 千吨 | 2026-9 |
| 2001 | 637 | 千吨 | 2026-9 |
| 2000 | 638 | 千吨 | 2026-9 |
| 1999 | 607 | 千吨 | 2026-9 |
| 1998 | 633 | 千吨 | 2026-9 |
| 1997 | 652 | 千吨 | 2026-9 |
| 1996 | 623 | 千吨 | 2026-9 |
| 1995 | 535 | 千吨 | 2026-9 |
| 1994 | 516 | 千吨 | 2026-9 |
| 1993 | 489 | 千吨 | 2026-9 |
| 1992 | 362 | 千吨 | 2026-9 |
| 1991 | 324 | 千吨 | 2026-9 |
| 1990 | 289 | 千吨 | 2026-9 |
| 1989 | 297 | 千吨 | 2026-9 |
| 1988 | 318 | 千吨 | 2026-9 |
| 1987 | 258 | 千吨 | 2026-9 |
| 1986 | 190 | 千吨 | 2026-9 |
| 1985 | 146 | 千吨 | 2026-9 |
| 1984 | 148 | 千吨 | 2026-9 |
| 1983 | 150 | 千吨 | 2026-9 |