| 年度 | 实际值 |
|---|---|
| 1992 | 532 |
| 1993 | 539 |
| 1994 | 542 |
| 1995 | 560 |
| 1996 | 579 |
| 1997 | 584 |
| 1998 | 585 |
| 1999 | 590 |
| 2000 | 595 |
| 2001 | 604 |
| 2002 | 595 |
| 2003 | 573.28 |
| 2004 | 582.19 |
| 2005 | 577.53 |
| 2006 | 586.01 |
| 2007 | 592.89 |
| 2008 | 340.33 |
| 2009 | |
| 2010 | 324.31 |
| 2011 | 331.21 |
| 2012 | 375.89 |
| 2013 | 377.12 |
| 2014 | 376.86 |
| 2015 | 372.88 |