| 年度 | 实际值 |
|---|---|
| 1992 | 352.2 |
| 1993 | 354.7 |
| 1994 | 358.88 |
| 1995 | 361.68 |
| 1996 | 364.97 |
| 1997 | 368.4 |
| 1998 | 371.43 |
| 1999 | 374 |
| 2000 | 370.96 |
| 2001 | 372.29 |
| 2002 | 373.17 |
| 2003 | 376.6 |
| 2004 | 380.03 |
| 2005 | 374.58 |
| 2006 | 377.39 |
| 2007 | 383.44 |
| 2008 | 384.94 |
| 2009 | |
| 2010 | 381.43 |
| 2011 | 382.7 |
| 2012 | 376.1 |
| 2013 | 379.4 |
| 2014 | |
| 2015 | 378.75 |
| 2016 | 378 |
| 2017 | 370 |
| 2018 | 365 |