| 年度 | 实际值 |
|---|---|
| 1992 | 649 |
| 1993 | 657 |
| 1994 | 665 |
| 1995 | 388 |
| 1996 | 391 |
| 1997 | 393 |
| 1998 | 395 |
| 1999 | 397 |
| 2000 | 403 |
| 2001 | 404 |
| 2002 | 406 |
| 2003 | 406.53 |
| 2004 | 408.67 |
| 2005 | 408.91 |
| 2006 | 412.34 |
| 2007 | 412.14 |
| 2008 | 423.03 |
| 2009 | |
| 2010 | 426.42 |
| 2011 | 429.94 |
| 2012 | 430.23 |
| 2013 | 433.84 |
| 2014 | 427.46 |
| 2015 | 424.09 |