| 年度 | 实际值 |
|---|---|
| 1992 | 27.29 |
| 1993 | 29.28 |
| 1994 | 30.98 |
| 1995 | 32.36 |
| 1996 | 33.3 |
| 1997 | 34.54 |
| 1998 | 35.87 |
| 1999 | 36.56 |
| 2000 | 37.43 |
| 2001 | 38.5943 |
| 2002 | 40.0301 |
| 2003 | 108.7358 |
| 2004 | 111.5714 |
| 2005 | 114.4654 |
| 2006 | 118.2617 |
| 2007 | 122.2786 |
| 2008 | 125.9545 |
| 2009 | 129.0151 |
| 2010 | 129.02 |
| 2011 | 137.5 |
| 2012 | 138.1 |
| 2013 | 138.8 |
| 2014 | 141.7 |
| 2015 | 145.43 |
| 2016 | 150 |
| 2017 | 155 |
| 2018 | 164 |