| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2016 | 661 | 千吨 | 2026-9 |
| 2015 | 625 | 千吨 | 2026-9 |
| 2014 | 698 | 千吨 | 2026-9 |
| 2013 | 673 | 千吨 | 2026-9 |
| 2012 | 610 | 千吨 | 2026-9 |
| 2011 | 598 | 千吨 | 2026-9 |
| 2010 | 522 | 千吨 | 2026-9 |
| 2009 | 397 | 千吨 | 2026-9 |
| 2008 | 227 | 千吨 | 2026-9 |
| 2007 | 186 | 千吨 | 2026-9 |
| 2006 | 124 | 千吨 | 2026-9 |
| 2005 | 139 | 千吨 | 2026-9 |
| 2004 | 141 | 千吨 | 2026-9 |
| 2003 | 88 | 千吨 | 2026-9 |
| 2002 | 56 | 千吨 | 2026-9 |
| 2001 | 15 | 千吨 | 2026-9 |
| 2000 | 21 | 千吨 | 2026-9 |
| 1999 | 12 | 千吨 | 2026-9 |
| 1998 | 8 | 千吨 | 2026-9 |
| 1997 | 5 | 千吨 | 2026-9 |
| 1996 | 1 | 千吨 | 2026-9 |
| 1995 | 0 | 千吨 | 2026-9 |
| 1994 | 0 | 千吨 | 2026-9 |
| 1993 | 0 | 千吨 | 2026-9 |
| 1992 | 0 | 千吨 | 2026-9 |
| 1991 | 0 | 千吨 | 2026-9 |
| 1990 | 0 | 千吨 | 2026-9 |
| 1989 | 0 | 千吨 | 2026-9 |
| 1988 | 7 | 千吨 | 2026-9 |
| 1987 | 92 | 千吨 | 2026-9 |
| 1986 | 25 | 千吨 | 2026-9 |
| 1985 | 40 | 千吨 | 2026-9 |
| 1984 | 70 | 千吨 | 2026-9 |
| 1983 | 100 | 千吨 | 2026-9 |
| 1982 | 121 | 千吨 | 2026-9 |
| 1981 | 138 | 千吨 | 2026-9 |
| 1980 | 60 | 千吨 | 2026-9 |
| 1979 | 25 | 千吨 | 2026-9 |
| 1978 | 17 | 千吨 | 2026-9 |
| 1977 | 17 | 千吨 | 2026-9 |
| 1976 | 30 | 千吨 | 2026-9 |
| 1975 | 11 | 千吨 | 2026-9 |