| 年度 | 实际值 |
|---|---|
| 1992 | 383 |
| 1993 | 388 |
| 1994 | 386 |
| 1995 | 391 |
| 1996 | 392 |
| 1997 | 395 |
| 1998 | 397 |
| 1999 | 398 |
| 2000 | 399 |
| 2001 | 399 |
| 2002 | 400 |
| 2003 | 400.36 |
| 2004 | 404.08 |
| 2005 | 404.82 |
| 2006 | 405.97 |
| 2007 | 407.06 |
| 2008 | 408.69 |
| 2009 | |
| 2010 | 409.97 |
| 2011 | 414.26 |
| 2012 | 412.2 |
| 2013 | 413.47 |
| 2014 | 413.88 |
| 2015 | 411.36 |