| 年度 | 数值 | 单位 | 发布日期 |
|---|---|---|---|
| 2016 | 27 | 千吨 | 2026-9 |
| 2015 | 26 | 千吨 | 2026-9 |
| 2014 | 19 | 千吨 | 2026-9 |
| 2013 | 26 | 千吨 | 2026-9 |
| 2012 | 21 | 千吨 | 2026-9 |
| 2011 | 15 | 千吨 | 2026-9 |
| 2010 | 16 | 千吨 | 2026-9 |
| 2009 | 11 | 千吨 | 2026-9 |
| 2008 | 9 | 千吨 | 2026-9 |
| 2007 | 6 | 千吨 | 2026-9 |
| 2006 | 3 | 千吨 | 2026-9 |
| 2005 | 2 | 千吨 | 2026-9 |
| 2004 | 1 | 千吨 | 2026-9 |
| 2003 | 2 | 千吨 | 2026-9 |
| 2002 | 2 | 千吨 | 2026-9 |
| 2001 | 2 | 千吨 | 2026-9 |
| 2000 | 2 | 千吨 | 2026-9 |
| 1999 | 1 | 千吨 | 2026-9 |
| 1998 | 1 | 千吨 | 2026-9 |
| 1997 | 0 | 千吨 | 2026-9 |
| 1996 | 0 | 千吨 | 2026-9 |
| 1995 | 0 | 千吨 | 2026-9 |
| 1986 | 0 | 千吨 | 2026-9 |
| 1985 | 0 | 千吨 | 2026-9 |
| 1984 | 0 | 千吨 | 2026-9 |
| 1983 | 0 | 千吨 | 2026-9 |
| 1982 | 0 | 千吨 | 2026-9 |