| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2016 | 8 | 千吨 | 2026-9 |
| 2015 | 8 | 千吨 | 2026-9 |
| 2014 | 10 | 千吨 | 2026-9 |
| 2013 | 13 | 千吨 | 2026-9 |
| 2012 | 13 | 千吨 | 2026-9 |
| 2011 | 12 | 千吨 | 2026-9 |
| 2010 | 13 | 千吨 | 2026-9 |
| 2009 | 12 | 千吨 | 2026-9 |
| 2008 | 18 | 千吨 | 2026-9 |
| 2007 | 26 | 千吨 | 2026-9 |
| 2006 | 29 | 千吨 | 2026-9 |
| 2005 | 39 | 千吨 | 2026-9 |
| 2004 | 29 | 千吨 | 2026-9 |
| 2003 | 58 | 千吨 | 2026-9 |
| 2002 | 61 | 千吨 | 2026-9 |
| 2001 | 59 | 千吨 | 2026-9 |
| 2000 | 65 | 千吨 | 2026-9 |
| 1999 | 63 | 千吨 | 2026-9 |
| 1998 | 53 | 千吨 | 2026-9 |
| 1997 | 67 | 千吨 | 2026-9 |
| 1996 | 69 | 千吨 | 2026-9 |
| 1995 | 70 | 千吨 | 2026-9 |
| 1994 | 64 | 千吨 | 2026-9 |
| 1993 | 67 | 千吨 | 2026-9 |
| 1992 | 67 | 千吨 | 2026-9 |
| 1991 | 20 | 千吨 | 2026-9 |
| 1990 | 22 | 千吨 | 2026-9 |
| 1989 | 23 | 千吨 | 2026-9 |
| 1988 | 24 | 千吨 | 2026-9 |
| 1987 | 29 | 千吨 | 2026-9 |
| 1986 | 29 | 千吨 | 2026-9 |
| 1985 | 24 | 千吨 | 2026-9 |
| 1984 | 24 | 千吨 | 2026-9 |
| 1983 | 27 | 千吨 | 2026-9 |
| 1982 | 30 | 千吨 | 2026-9 |
| 1981 | 29 | 千吨 | 2026-9 |
| 1980 | 26 | 千吨 | 2026-9 |
| 1979 | 26 | 千吨 | 2026-9 |
| 1978 | 25 | 千吨 | 2026-9 |
| 1977 | 28 | 千吨 | 2026-9 |
| 1976 | 24 | 千吨 | 2026-9 |
| 1975 | 16 | 千吨 | 2026-9 |
| 1974 | 20 | 千吨 | 2026-9 |
| 1973 | 20 | 千吨 | 2026-9 |
| 1972 | 21 | 千吨 | 2026-9 |
| 1971 | 22 | 千吨 | 2026-9 |
| 1970 | 16 | 千吨 | 2026-9 |
| 1969 | 16 | 千吨 | 2026-9 |