| 年度 | 数值 | 单位 | 发布日期 |
| 2016 | 12730 | 千吨 | 2026-9 |
| 2015 | 13668 | 千吨 | 2026-9 |
| 2014 | 13260 | 千吨 | 2026-9 |
| 2013 | 13594 | 千吨 | 2026-9 |
| 2012 | 13954 | 千吨 | 2026-9 |
| 2011 | 13438 | 千吨 | 2026-9 |
| 2010 | 12836 | 千吨 | 2026-9 |
| 2009 | 12501 | 千吨 | 2026-9 |
| 2008 | 12239 | 千吨 | 2026-9 |
| 2007 | 11773 | 千吨 | 2026-9 |
| 2006 | 10693 | 千吨 | 2026-9 |
| 2005 | 10419 | 千吨 | 2026-9 |
| 2004 | 10172 | 千吨 | 2026-9 |
| 2003 | 10351 | 千吨 | 2026-9 |
| 2002 | 9994 | 千吨 | 2026-9 |
| 2001 | 9726 | 千吨 | 2026-9 |
| 2000 | 9857 | 千吨 | 2026-9 |
| 1999 | 9105 | 千吨 | 2026-9 |
| 1998 | 8517 | 千吨 | 2026-9 |
| 1997 | 7773 | 千吨 | 2026-9 |
| 1996 | 9306 | 千吨 | 2026-9 |
| 1995 | 7966 | 千吨 | 2026-9 |
| 1994 | 6277 | 千吨 | 2026-9 |
| 1993 | 4600 | 千吨 | 2026-9 |
| 1992 | 3625 | 千吨 | 2026-9 |
| 1991 | 3152 | 千吨 | 2026-9 |
| 1990 | 2492 | 千吨 | 2026-9 |
| 1989 | 2150 | 千吨 | 2026-9 |
| 1988 | 2070 | 千吨 | 2026-9 |
| 1987 | 1582 | 千吨 | 2026-9 |