| 年度 | 实际值 |
|---|---|
| 1992 | 530.5 |
| 1993 | 528.4 |
| 1994 | 527.06 |
| 1995 | 526.61 |
| 1996 | 530.31 |
| 1997 | 532.81 |
| 1998 | 535.95 |
| 1999 | 538.59 |
| 2000 | 540.74 |
| 2001 | 543.08 |
| 2002 | 546.41 |
| 2003 | 547.65 |
| 2004 | 549.95 |
| 2005 | 550.78 |
| 2006 | 551.7 |
| 2007 | 552.6 |
| 2008 | 554.72 |
| 2009 | |
| 2010 | 557.01 |
| 2011 | 559.5 |
| 2012 | 558.9 |
| 2013 | 558.8 |
| 2014 | |
| 2015 | 565.71 |
| 2016 | 569 |
| 2017 | 571 |
| 2018 | 573 |