| 年度 | 实际值 |
|---|---|
| 1992 | 433 |
| 1993 | 436 |
| 1994 | 439 |
| 1995 | 445 |
| 1996 | 448 |
| 1997 | 452 |
| 1998 | 455 |
| 1999 | 459 |
| 2000 | 462 |
| 2001 | 463 |
| 2002 | 464 |
| 2003 | 466.3 |
| 2004 | 469.6 |
| 2005 | 471.99 |
| 2006 | 474.53 |
| 2007 | 476.3 |
| 2008 | 477.78 |
| 2009 | |
| 2010 | 517.43 |
| 2011 | 520.66 |
| 2012 | 522.9 |
| 2013 | 513.57 |
| 2014 | 517.22 |
| 2015 | 522.12 |