| 年度 | 实际值 |
|---|---|
| 1992 | 27.84 |
| 1993 | 29.37 |
| 1994 | 41.96 |
| 1995 | 43.76 |
| 1996 | 46.2 |
| 1997 | 48.49 |
| 1998 | 49.64 |
| 1999 | 50.75 |
| 2000 | 52.16 |
| 2001 | 53.33 |
| 2002 | 55.15 |
| 2003 | 56.94 |
| 2004 | 58.92 |
| 2005 | 60.65 |
| 2006 | 62 |
| 2007 | 63.19 |
| 2008 | 63.94 |
| 2009 | |
| 2010 | 64.54 |
| 2011 | 65.2 |
| 2012 | 65.6 |
| 2013 | 66.2 |
| 2014 | 131.6 |
| 2015 | 132.14 |
| 2016 | 134 |
| 2017 | 134 |
| 2018 | 136 |