| 年度 | 实际值 |
|---|---|
| 1992 | 214 |
| 1993 | 220 |
| 1994 | 223 |
| 1995 | 229 |
| 1996 | 233 |
| 1997 | 239 |
| 1998 | 242 |
| 1999 | 244 |
| 2000 | 249 |
| 2001 | 251 |
| 2002 | 254 |
| 2003 | 256.64 |
| 2004 | 262.79 |
| 2005 | 266.7 |
| 2006 | 274.61 |
| 2007 | 280.42 |
| 2008 | 285.75 |
| 2009 | |
| 2010 | 297.35 |
| 2011 | 302.42 |
| 2012 | 301.43 |
| 2013 | 302.72 |
| 2014 | 307.17 |
| 2015 | 314.65 |