| 年度 | 实际值 |
|---|---|
| 1992 | 539 |
| 1993 | 539 |
| 1994 | 542 |
| 1995 | 545 |
| 1996 | 549 |
| 1997 | 551 |
| 1998 | 553 |
| 1999 | 555 |
| 2000 | 558 |
| 2001 | 559 |
| 2002 | 561 |
| 2003 | 562.37 |
| 2004 | 563.95 |
| 2005 | 566.5 |
| 2006 | 581.54 |
| 2007 | 583.65 |
| 2008 | 586.22 |
| 2009 | |
| 2010 | 576.23 |
| 2011 | 579.94 |
| 2012 | 582.98 |
| 2013 | 578.79 |
| 2014 | 582.09 |
| 2015 | 577.08 |