| 年度 | 实际值 |
|---|---|
| 1992 | 311 |
| 1993 | 313 |
| 1994 | 317 |
| 1995 | 323 |
| 1996 | 325 |
| 1997 | 327 |
| 1998 | 339 |
| 1999 | 331 |
| 2000 | 333 |
| 2001 | 337 |
| 2002 | 340 |
| 2003 | 344.08 |
| 2004 | 347.2 |
| 2005 | 348.4 |
| 2006 | 353.38 |
| 2007 | 357.91 |
| 2008 | 387.3 |
| 2009 | |
| 2010 | 371.33 |
| 2011 | 375.65 |
| 2012 | 379.17 |
| 2013 | 382.22 |
| 2014 | 384.83 |
| 2015 | 390.18 |