| 年度 | 实际值 |
|---|---|
| 1992 | 1667 |
| 1993 | 1679 |
| 1994 | 1679 |
| 1995 | 1567 |
| 1996 | 1572 |
| 1997 | 1584 |
| 1998 | 1737 |
| 1999 | 1737 |
| 2000 | 1746 |
| 2001 | 1750 |
| 2002 | 1749 |
| 2003 | 1745.54 |
| 2004 | 1740.85 |
| 2005 | 1745.09 |
| 2006 | 1746.65 |
| 2007 | 1741.96 |
| 2008 | 1738.62 |
| 2009 | |
| 2010 | 1583.47 |
| 2011 | 1593.27 |
| 2012 | 1588.98 |
| 2013 | 1581.63 |
| 2014 | 1575.92 |
| 2015 | 1551.02 |