| 年度 | 实际值 |
|---|---|
| 1992 | 629 |
| 1993 | 629.93 |
| 1994 | 631.63 |
| 1995 | 634.88 |
| 1996 | 638.37 |
| 1997 | 641.49 |
| 1998 | 643.35 |
| 1999 | 644.79 |
| 2000 | 645.8 |
| 2001 | 645.99 |
| 2002 | 646.72 |
| 2003 | 645.82 |
| 2004 | 646.82 |
| 2005 | 647.78 |
| 2006 | 649.98 |
| 2007 | 651.47 |
| 2008 | 651.69 |
| 2009 | |
| 2010 | 651.14 |
| 2011 | 651.8 |
| 2012 | 650.3 |
| 2013 | 651.2 |
| 2014 | |
| 2015 | 653.28 |
| 2016 | 655 |
| 2017 | 654 |
| 2018 | 654 |