| 年度 | 实际值 |
|---|---|
| 1992 | 666 |
| 1993 | 667 |
| 1994 | 668 |
| 1995 | 672 |
| 1996 | 675 |
| 1997 | 677 |
| 1998 | 773 |
| 1999 | 777 |
| 2000 | 780 |
| 2001 | 780 |
| 2002 | 780 |
| 2003 | 782.12 |
| 2004 | 781.06 |
| 2005 | 780.39 |
| 2006 | 783.75 |
| 2007 | 786.91 |
| 2008 | 789.18 |
| 2009 | |
| 2010 | 790.07 |
| 2011 | 791.27 |
| 2012 | 792.16 |
| 2013 | 792.65 |
| 2014 | 791.01 |
| 2015 | 779.8 |