| 年度 | 数值 | 单位 | 发布日期 |
|---|---|---|---|
| 2016 | 76 | 千吨 | 2026-9 |
| 2015 | 57 | 千吨 | 2026-9 |
| 2014 | 56 | 千吨 | 2026-9 |
| 2013 | 63 | 千吨 | 2026-9 |
| 2012 | 106 | 千吨 | 2026-9 |
| 2011 | 52 | 千吨 | 2026-9 |
| 2010 | 144 | 千吨 | 2026-9 |
| 2009 | 181 | 千吨 | 2026-9 |
| 2008 | 252 | 千吨 | 2026-9 |
| 2007 | 140 | 千吨 | 2026-9 |
| 2006 | 158 | 千吨 | 2026-9 |
| 2005 | 148 | 千吨 | 2026-9 |
| 2004 | 277 | 千吨 | 2026-9 |
| 2003 | 88 | 千吨 | 2026-9 |
| 2002 | 61 | 千吨 | 2026-9 |
| 2001 | 64 | 千吨 | 2026-9 |
| 2000 | 25 | 千吨 | 2026-9 |
| 1999 | 87 | 千吨 | 2026-9 |
| 1998 | 50 | 千吨 | 2026-9 |
| 1997 | 57 | 千吨 | 2026-9 |
| 1996 | 95 | 千吨 | 2026-9 |
| 1995 | 59 | 千吨 | 2026-9 |
| 1994 | 2 | 千吨 | 2026-9 |
| 1993 | 1 | 千吨 | 2026-9 |
| 1992 | 1 | 千吨 | 2026-9 |
| 1991 | 0 | 千吨 | 2026-9 |
| 1990 | 0 | 千吨 | 2026-9 |
| 1989 | 0 | 千吨 | 2026-9 |