| 年度 | 实际值 |
|---|---|
| 1992 | 355.99 |
| 1993 | 361.13 |
| 1994 | 367.07 |
| 1995 | 371.85 |
| 1996 | 312.99 |
| 1997 | 316.68 |
| 1998 | 320.32 |
| 1999 | 324.75 |
| 2000 | 330.67 |
| 2001 | 333.57 |
| 2002 | 336.63 |
| 2003 | 340.19 |
| 2004 | 345.5 |
| 2005 | 352.03 |
| 2006 | 355.13 |
| 2007 | 357.97 |
| 2008 | 361.25 |
| 2009 | |
| 2010 | 368.02 |
| 2011 | 370 |
| 2012 | 367.3 |
| 2013 | 367.8 |
| 2014 | |
| 2015 | 371.68 |
| 2016 | 374 |
| 2017 | 371 |
| 2018 | 373 |