| 年度 | 实际值 |
|---|---|
| 1992 | 384 |
| 1993 | 388 |
| 1994 | 391 |
| 1995 | 394 |
| 1996 | 395 |
| 1997 | 396 |
| 1998 | 399 |
| 1999 | 400 |
| 2000 | 402 |
| 2001 | 400 |
| 2002 | 399 |
| 2003 | 397.04 |
| 2004 | 394.04 |
| 2005 | 390.26 |
| 2006 | 387.43 |
| 2007 | 395.09 |
| 2008 | 384.61 |
| 2009 | |
| 2010 | 383.09 |
| 2011 | 379.57 |
| 2012 | 371.74 |
| 2013 | 370.43 |
| 2014 | 367.39 |
| 2015 | 360.87 |