| 年度 | 实际值 |
|---|---|
| 1992 | 285.45 |
| 1993 | 287.89 |
| 1994 | 288.81 |
| 1995 | 291.09 |
| 1996 | 295.01 |
| 1997 | 296.52 |
| 1998 | 299.16 |
| 1999 | 299.14 |
| 2000 | 303.7 |
| 2001 | 307.39 |
| 2002 | 311.77 |
| 2003 | 315.19 |
| 2004 | 394.54 |
| 2005 | 398.96 |
| 2006 | 472.8 |
| 2007 | 475.48 |
| 2008 | 475.13 |
| 2009 | |
| 2010 | 474.7 |
| 2011 | 471.5 |
| 2012 | 471.4 |
| 2013 | 473.6 |
| 2014 | 473.8 |
| 2015 | 548.72 |
| 2016 | 551 |
| 2017 | 551 |
| 2018 | 551 |