| 年度 | 实际值 |
|---|---|
| 1992 | 679 |
| 1993 | 681 |
| 1994 | 682 |
| 1995 | 686 |
| 1996 | 689 |
| 1997 | 696 |
| 1998 | 665 |
| 1999 | 666 |
| 2000 | 669 |
| 2001 | 670 |
| 2002 | 672 |
| 2003 | 670.82 |
| 2004 | 671.6 |
| 2005 | 672.28 |
| 2006 | 673.05 |
| 2007 | 675.58 |
| 2008 | 676.85 |
| 2009 | |
| 2010 | 411.61 |
| 2011 | 681.32 |
| 2012 | 680.37 |
| 2013 | 683.08 |
| 2014 | 685.69 |
| 2015 | 686.65 |