| 年度 | 实际值 |
|---|---|
| 1992 | 864.9 |
| 1993 | 814.21 |
| 1994 | 816.93 |
| 1995 | 820.81 |
| 1996 | 823.71 |
| 1997 | 829.09 |
| 1998 | 835.79 |
| 1999 | 840.04 |
| 2000 | 844.57 |
| 2001 | 845.93 |
| 2002 | 847.46 |
| 2003 | 847.71 |
| 2004 | 850.65 |
| 2005 | 852.2 |
| 2006 | 855.29 |
| 2007 | 859.13 |
| 2008 | 862.48 |
| 2009 | |
| 2010 | 873.78 |
| 2011 | 877.6 |
| 2012 | 878.9 |
| 2013 | 882.9 |
| 2014 | |
| 2015 | 893.71 |
| 2016 | 901 |
| 2017 | 908 |
| 2018 | 914 |