| 年度 | 实际值 |
|---|---|
| 1992 | 113.31 |
| 1993 | 257.26 |
| 1994 | 259.61 |
| 1995 | 262.41 |
| 1996 | 265.9 |
| 1997 | 269.68 |
| 1998 | 272.18 |
| 1999 | 275.61 |
| 2000 | 283.9 |
| 2001 | 287.86 |
| 2002 | 292.65 |
| 2003 | 295.92 |
| 2004 | 299.68 |
| 2005 | 299.49 |
| 2006 | 305.85 |
| 2007 | 309.42 |
| 2008 | 312 |
| 2009 | |
| 2010 | 317.51 |
| 2011 | 318.9 |
| 2012 | 319.4 |
| 2013 | 337.5 |
| 2014 | |
| 2015 | 316.22 |
| 2016 | 318 |
| 2017 | 318 |
| 2018 | 318 |