| 年度 | 实际值 |
|---|---|
| 1992 | 470 |
| 1993 | 470 |
| 1994 | 472 |
| 1995 | 476 |
| 1996 | 480 |
| 1997 | 484 |
| 1998 | 488 |
| 1999 | 493 |
| 2000 | 496 |
| 2001 | 497 |
| 2002 | 504 |
| 2003 | 509.15 |
| 2004 | 516.44 |
| 2005 | 525.36 |
| 2006 | 533.89 |
| 2007 | 539.27 |
| 2008 | 545.85 |
| 2009 | |
| 2010 | 552.13 |
| 2011 | 555.7 |
| 2012 | 559.09 |
| 2013 | 560.94 |
| 2014 | 568.22 |
| 2015 | 575.49 |