| 年度 | 实际值 |
|---|---|
| 1992 | 659 |
| 1993 | 666 |
| 1994 | 679 |
| 1995 | 700 |
| 1996 | 386 |
| 1997 | 388 |
| 1998 | 393 |
| 1999 | 400 |
| 2000 | 413 |
| 2001 | 418 |
| 2002 | 424 |
| 2003 | 429.25 |
| 2004 | 432.92 |
| 2005 | 436.47 |
| 2006 | 441.27 |
| 2007 | 447.87 |
| 2008 | 452.99 |
| 2009 | |
| 2010 | 419.67 |
| 2011 | 468.16 |
| 2012 | 466.18 |
| 2013 | 471.33 |
| 2014 | 476.08 |
| 2015 | 487.38 |