| 年度 | 实际值 |
|---|---|
| 1992 | 335 |
| 1993 | 339 |
| 1994 | 340 |
| 1995 | 346 |
| 1996 | 347 |
| 1997 | 348 |
| 1998 | 337 |
| 1999 | 338 |
| 2000 | 341 |
| 2001 | 343 |
| 2002 | 346 |
| 2003 | 363.27 |
| 2004 | 366.64 |
| 2005 | 370.38 |
| 2006 | 372.91 |
| 2007 | 376.59 |
| 2008 | 379.97 |
| 2009 | |
| 2010 | 383.22 |
| 2011 | 371.43 |
| 2012 | 373.26 |
| 2013 | 375.19 |
| 2014 | 378.17 |
| 2015 | 379.39 |