年度 | 实际值 |
---|---|
1995 | 23.2 |
1996 | 22.6 |
1997 | 14.22 |
1998 | 17.7 |
1999 | 13.8 |
2000 | 13 |
2001 | 12.18 |
2002 | 11.11 |
2003 | 9.83 |
2004 | 10.46 |
2005 | 8.49 |
2006 | 7.24 |
2007 | 7.26 |
2008 | 7.34 |
2009 | |
2010 | 7.1 |
2011 | 7.91 |
2012 | 7.91 |
2013 | 8.03 |
2014 | 7.29 |
2015 | 7.09 |
2016 | 6.95 |
2017 | 6.15 |
2018 | 6.37 |