| 年度 | 实际值 |
|---|---|
| 1992 | 340.04 |
| 1993 | 343.33 |
| 1994 | 345.72 |
| 1995 | 347.73 |
| 1996 | 350.45 |
| 1997 | 430.27 |
| 1998 | 433.44 |
| 1999 | 437.3 |
| 2000 | 439.59 |
| 2001 | 442.31 |
| 2002 | 444.82 |
| 2003 | 445.88 |
| 2004 | 450.64 |
| 2005 | 458.04 |
| 2006 | 467.54 |
| 2007 | 475.15 |
| 2008 | 478.95 |
| 2009 | |
| 2010 | 489.64 |
| 2011 | 494.1 |
| 2012 | 494.2 |
| 2013 | 499 |
| 2014 | |
| 2015 | 504.77 |
| 2016 | 510 |
| 2017 | 508 |
| 2018 | 509 |