| 年度 | 数值 | 单位 | 发布日期 |
|---|---|---|---|
| 2016 | 0 | 千吨 | 2026-9 |
| 2015 | 0 | 千吨 | 2026-9 |
| 2014 | 56 | 千吨 | 2026-9 |
| 2013 | 53 | 千吨 | 2026-9 |
| 2012 | 56 | 千吨 | 2026-9 |
| 2011 | 55 | 千吨 | 2026-9 |
| 2010 | 51 | 千吨 | 2026-9 |
| 2009 | 50 | 千吨 | 2026-9 |
| 2008 | 49 | 千吨 | 2026-9 |
| 2007 | 38 | 千吨 | 2026-9 |
| 2006 | 25 | 千吨 | 2026-9 |
| 2005 | 34 | 千吨 | 2026-9 |
| 2004 | 30 | 千吨 | 2026-9 |
| 2003 | 32 | 千吨 | 2026-9 |
| 2002 | 31 | 千吨 | 2026-9 |
| 2001 | 28 | 千吨 | 2026-9 |
| 2000 | 30 | 千吨 | 2026-9 |
| 1999 | 29 | 千吨 | 2026-9 |
| 1998 | 26 | 千吨 | 2026-9 |
| 1997 | 18 | 千吨 | 2026-9 |
| 1994 | 15 | 千吨 | 2026-9 |
| 1993 | 16 | 千吨 | 2026-9 |
| 1992 | 18 | 千吨 | 2026-9 |
| 1991 | 18 | 千吨 | 2026-9 |
| 1990 | 26 | 千吨 | 2026-9 |
| 1989 | 28 | 千吨 | 2026-9 |