| 年度 | 实际值 |
|---|---|
| 1992 | 658.93 |
| 1993 | 663.68 |
| 1994 | 668.22 |
| 1995 | 671.23 |
| 1996 | 673.5 |
| 1997 | 343.35 |
| 1998 | 344.47 |
| 1999 | 345.12 |
| 2000 | 345.9 |
| 2001 | 346.46 |
| 2002 | 346.86 |
| 2003 | 347.63 |
| 2004 | 347.67 |
| 2005 | 347.9 |
| 2006 | 350.12 |
| 2007 | 352.45 |
| 2008 | 353.5 |
| 2009 | |
| 2010 | 353.35 |
| 2011 | 354.4 |
| 2012 | 355.1 |
| 2013 | 356 |
| 2014 | |
| 2015 | 353.79 |
| 2016 | 355 |
| 2017 | 352 |
| 2018 | 351 |