| 年度 | 实际值 |
|---|---|
| 1992 | 517 |
| 1993 | 520 |
| 1994 | 521 |
| 1995 | 527 |
| 1996 | |
| 1997 | |
| 1998 | 469 |
| 1999 | 499 |
| 2000 | 506.62 |
| 2001 | 510.7 |
| 2002 | 513.98 |
| 2003 | 516.2 |
| 2004 | 520.313741 |
| 2005 | 524 |
| 2006 | 528.951548848292 |
| 2007 | 530.178713264496 |
| 2008 | 533.071882446386 |
| 2009 | 530.341044479746 |
| 2010 | 534.891382049245 |
| 2011 | 539.356036536934 |
| 2012 | 476.869551133171 |
| 2013 | 479 |
| 2014 | 484 |
| 2015 | 486 |