| 年份 | 单位：千克 |
| 2012 | 购买后可见 » |
| 2011 | 购买后可见 » |
| 2010 | 购买后可见 » |
| 2009 | 购买后可见 » |
| 2008 | 购买后可见 » |
| 2007 | 购买后可见 » |
| 2006 | 购买后可见 » |
| 2005 | 购买后可见 » |
| 2004 | 购买后可见 » |
| 2003 | 购买后可见 » |
| 2002 | 78.48 |
| 2001 | 79.69 |
| 2000 | 82.31 |
| 1999 | 84.91 |
| 1998 | 86.72 |
| 1997 | 88.59 |
| 1996 | 94.68 |
| 1995 | 97.00 |
| 1994 | 101.67 |
| 1993 | 97.78 |
| 1992 | 111.50 |
| 1990 | 130.72 |
| 1985 | 134.76 |
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