| 年度 | 实际值 |
|---|---|
| 1992 | 376 |
| 1993 | 379 |
| 1994 | 380 |
| 1995 | 386 |
| 1996 | 387 |
| 1997 | 386 |
| 1998 | 388 |
| 1999 | 388 |
| 2000 | 391 |
| 2001 | 392 |
| 2002 | 392 |
| 2003 | 392.99 |
| 2004 | 392.34 |
| 2005 | 393.27 |
| 2006 | 394.79 |
| 2007 | 398.87 |
| 2008 | 400.76 |
| 2009 | |
| 2010 | 401.89 |
| 2011 | 403.87 |
| 2012 | 405.03 |
| 2013 | 405.84 |
| 2014 | 403.12 |
| 2015 | 403.84 |