| 年度 | 实际值 |
|---|---|
| 1992 | 328.57 |
| 1993 | 329.33 |
| 1994 | 331.44 |
| 1995 | 333.65 |
| 1996 | 337.54 |
| 1997 | 339.23 |
| 1998 | 340.75 |
| 1999 | 339.71 |
| 2000 | 341.48 |
| 2001 | 341.52 |
| 2002 | 343.24 |
| 2003 | 346.22 |
| 2004 | 348.97 |
| 2005 | 351.63 |
| 2006 | 354.67 |
| 2007 | 357.3837 |
| 2008 | 358.74 |
| 2009 | 359.82 |
| 2010 | 360.8 |
| 2011 | 362.8615 |
| 2012 | 364.7719 |
| 2013 | 365.91 |
| 2014 | 368.64 |
| 2015 | 370.85 |
| 2016 | 375 |
| 2017 | 379 |
| 2018 | 382 |