| 年度 | 实际值 |
|---|---|
| 1992 | 283.3 |
| 1993 | 287.78 |
| 1994 | 291.11 |
| 1995 | 294.4 |
| 1996 | 299.45 |
| 1997 | 305.62 |
| 1998 | 311.5 |
| 1999 | 314.63 |
| 2000 | 321.94 |
| 2001 | 324.91 |
| 2002 | 331.73 |
| 2003 | 334.13 |
| 2004 | 333.21 |
| 2005 | 337.36 |
| 2006 | 341.26 |
| 2007 | 335.43 |
| 2008 | 346.64 |
| 2009 | |
| 2010 | 358.39 |
| 2011 | 366.8 |
| 2012 | 355.1 |
| 2013 | 361 |
| 2014 | |
| 2015 | 366.41 |
| 2016 | 373 |
| 2017 | 373 |
| 2018 | 373 |