| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2016 | 185 | 千吨 | 2026-9 |
| 2015 | 168 | 千吨 | 2026-9 |
| 2014 | 139 | 千吨 | 2026-9 |
| 2013 | 140 | 千吨 | 2026-9 |
| 2012 | 146 | 千吨 | 2026-9 |
| 2011 | 133 | 千吨 | 2026-9 |
| 2010 | 89 | 千吨 | 2026-9 |
| 2009 | 67 | 千吨 | 2026-9 |
| 2008 | 95 | 千吨 | 2026-9 |
| 2007 | 95 | 千吨 | 2026-9 |
| 2006 | 50 | 千吨 | 2026-9 |
| 2005 | 75 | 千吨 | 2026-9 |
| 2004 | 85 | 千吨 | 2026-9 |
| 2003 | 80 | 千吨 | 2026-9 |
| 2002 | 95 | 千吨 | 2026-9 |
| 2001 | 83 | 千吨 | 2026-9 |
| 2000 | 74 | 千吨 | 2026-9 |
| 1999 | 49 | 千吨 | 2026-9 |
| 1998 | 28 | 千吨 | 2026-9 |
| 1997 | 33 | 千吨 | 2026-9 |
| 1996 | 28 | 千吨 | 2026-9 |
| 1995 | 37 | 千吨 | 2026-9 |
| 1994 | 34 | 千吨 | 2026-9 |
| 1993 | 22 | 千吨 | 2026-9 |
| 1992 | 24 | 千吨 | 2026-9 |
| 1991 | 9 | 千吨 | 2026-9 |
| 1990 | 192 | 千吨 | 2026-9 |
| 1989 | 268 | 千吨 | 2026-9 |
| 1988 | 210 | 千吨 | 2026-9 |
| 1987 | 201 | 千吨 | 2026-9 |
| 1986 | 198 | 千吨 | 2026-9 |
| 1985 | 190 | 千吨 | 2026-9 |
| 1984 | 160 | 千吨 | 2026-9 |
| 1983 | 113 | 千吨 | 2026-9 |
| 1982 | 155 | 千吨 | 2026-9 |
| 1981 | 75 | 千吨 | 2026-9 |
| 1980 | 58 | 千吨 | 2026-9 |
| 1979 | 46 | 千吨 | 2026-9 |
| 1978 | 42 | 千吨 | 2026-9 |
| 1977 | 30 | 千吨 | 2026-9 |
| 1976 | 29 | 千吨 | 2026-9 |
| 1975 | 27 | 千吨 | 2026-9 |