| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2016 | 386 | 千吨 | 2026-9 |
| 2015 | 401 | 千吨 | 2026-9 |
| 2014 | 430 | 千吨 | 2026-9 |
| 2013 | 420 | 千吨 | 2026-9 |
| 2012 | 411 | 千吨 | 2026-9 |
| 2011 | 422 | 千吨 | 2026-9 |
| 2010 | 379 | 千吨 | 2026-9 |
| 2009 | 291 | 千吨 | 2026-9 |
| 2008 | 285 | 千吨 | 2026-9 |
| 2007 | 358 | 千吨 | 2026-9 |
| 2006 | 322 | 千吨 | 2026-9 |
| 2005 | 332 | 千吨 | 2026-9 |
| 2004 | 241 | 千吨 | 2026-9 |
| 2003 | 388 | 千吨 | 2026-9 |
| 2002 | 438 | 千吨 | 2026-9 |
| 2001 | 489 | 千吨 | 2026-9 |
| 2000 | 464 | 千吨 | 2026-9 |
| 1999 | 375 | 千吨 | 2026-9 |
| 1998 | 323 | 千吨 | 2026-9 |
| 1997 | 331 | 千吨 | 2026-9 |
| 1996 | 318 | 千吨 | 2026-9 |
| 1995 | 263 | 千吨 | 2026-9 |
| 1994 | 177 | 千吨 | 2026-9 |
| 1993 | 145 | 千吨 | 2026-9 |
| 1992 | 132 | 千吨 | 2026-9 |
| 1991 | 93 | 千吨 | 2026-9 |
| 1990 | 86 | 千吨 | 2026-9 |
| 1989 | 83 | 千吨 | 2026-9 |
| 1988 | 74 | 千吨 | 2026-9 |
| 1987 | 54 | 千吨 | 2026-9 |