| 年度 | 实际值 |
|---|---|
| 1994 | 231.88 |
| 1995 | 234.28 |
| 1996 | 239.76 |
| 1997 | 243.65 |
| 1998 | 247.3 |
| 1999 | 250.85 |
| 2000 | 257.75 |
| 2001 | 258.84 |
| 2002 | 260.09 |
| 2003 | 261.28 |
| 2004 | 261.96 |
| 2005 | 263.36 |
| 2006 | 266.82 |
| 2007 | 268.62 |
| 2008 | 272.68 |
| 2009 | |
| 2010 | 282.76 |
| 2011 | 286.1 |
| 2012 | 287 |
| 2013 | 290.3 |
| 2014 | |
| 2015 | 298.93 |
| 2016 | 301 |
| 2017 | 300 |
| 2018 | 301 |