| 年度 | 实际值 |
|---|---|
| 1992 | 455 |
| 1993 | 460 |
| 1994 | 462 |
| 1995 | 470 |
| 1996 | 476 |
| 1997 | 480 |
| 1998 | 484 |
| 1999 | 487 |
| 2000 | 492 |
| 2001 | 496 |
| 2002 | 499 |
| 2003 | 505.4 |
| 2004 | 509.18 |
| 2005 | 513.73 |
| 2006 | 520.33 |
| 2007 | 517.15 |
| 2008 | 487.43 |
| 2009 | |
| 2010 | 494.34 |
| 2011 | 497.02 |
| 2012 | 501.51 |
| 2013 | 501.68 |
| 2014 | 516.56 |
| 2015 | 534.91 |