年度 | 实际值 |
---|---|
1995 | 24.9 |
1996 | 24.4 |
1997 | 22.26 |
1998 | 21.4 |
1999 | 20.6 |
2000 | 18.9 |
2001 | 17.85 |
2002 | 16.97 |
2003 | 14.96 |
2004 | 13.12 |
2005 | 11.65 |
2006 | 10.84 |
2007 | 10.32 |
2008 | 9.55 |
2009 | |
2010 | 9.44 |
2011 | 8.94 |
2012 | 9.02 |
2013 | 9.03 |
2014 | 8.97 |
2015 | 9.32 |
2016 | 9.43 |
2017 | |
2018 | 7.09 |