| 年度 | 实际值 |
|---|---|
| 1992 | 329 |
| 1993 | 331 |
| 1994 | 333 |
| 1995 | 336 |
| 1996 | 339 |
| 1997 | 341 |
| 1998 | 344 |
| 1999 | 346 |
| 2000 | 349 |
| 2001 | 349 |
| 2002 | 350 |
| 2003 | 351.58 |
| 2004 | 355.11 |
| 2005 | 357.18 |
| 2006 | 358.32 |
| 2007 | 359.87 |
| 2008 | 362.02 |
| 2009 | |
| 2010 | 381.17 |
| 2011 | 382.87 |
| 2012 | 384.7 |
| 2013 | 388.05 |
| 2014 | 393.17 |
| 2015 | 394.14 |