| 年度 | 实际值 |
|---|---|
| 1992 | 179 |
| 1993 | 182 |
| 1994 | 183 |
| 1995 | 186 |
| 1996 | 189 |
| 1997 | 193 |
| 1998 | 197 |
| 1999 | 199 |
| 2000 | 203 |
| 2001 | 205 |
| 2002 | 210 |
| 2003 | 211.13 |
| 2004 | 210.55 |
| 2005 | 213.17 |
| 2006 | 215.63 |
| 2007 | 211.95 |
| 2008 | 219.03 |
| 2009 | |
| 2010 | 229.12 |
| 2011 | 234.49 |
| 2012 | 226.99 |
| 2013 | 230.58 |
| 2014 | 233.35 |
| 2015 | 233.81 |