| 年度 | 实际值 |
|---|---|
| 1992 | 433 |
| 1993 | 432 |
| 1994 | 438 |
| 1995 | 437 |
| 1996 | 438 |
| 1997 | 444 |
| 1998 | 445 |
| 1999 | 446 |
| 2000 | 446 |
| 2001 | 447 |
| 2002 | 448 |
| 2003 | 449.96 |
| 2004 | 451.31 |
| 2005 | 452.7 |
| 2006 | 455.89 |
| 2007 | 458.04 |
| 2008 | 458.63 |
| 2009 | |
| 2010 | 457.48 |
| 2011 | 459.59 |
| 2012 | 462.09 |
| 2013 | 463.45 |
| 2014 | 464.05 |
| 2015 | 462.89 |