| 年份 | 单位：亿元 |
| 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 | 100.50 |
| 2001 | 93.40 |
| 2000 | 60.40 |
| 1999 | 34.50 |
| 1998 | 72.10 |
| 1997 | 83.50 |
| 1996 | 137.70 |
| 1995 | 125.00 |
| 1994 | 101.40 |
| 1993 | 80.40 |
| 1992 | 31.58 |
| 1991 | 52.89 |
| 1990 | 48.53 |
| 1989 | 75.84 |
| 1988 | 39.85 |
| 1987 | 26.81 |
| 1986 | 26.41 |
| 1985 | 25.02 |
| 1984 | 8.28 |
| 1983 | 1.05 |
| 1982 | 7.16 |
| 1981 | 4.74 |
| 1980 | 1.33 |
| 1979 | 9.78 |
| 1978 | 7.27 |
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