| 年度 | 实际值 |
|---|---|
| 1992 | 39.05 |
| 1993 | 41.38 |
| 1994 | 42.8 |
| 1995 | 44.13 |
| 1996 | 45.18 |
| 1997 | 46.18 |
| 1998 | 46.84 |
| 1999 | 47.44 |
| 2000 | 48.86 |
| 2001 | 49.3999 |
| 2002 | 49.6085 |
| 2003 | 344.24 |
| 2004 | 350.89 |
| 2005 | 354.48 |
| 2006 | 358.06 |
| 2007 | 361.08 |
| 2008 | 364.34 |
| 2009 | |
| 2010 | 367.63 |
| 2011 | 374.8 |
| 2012 | 377.7 |
| 2013 | 381.6 |
| 2014 | 385.6 |
| 2015 | 388.97 |
| 2016 | 400 |
| 2017 | 420 |
| 2018 | 437 |