年度 | 实际值 |
---|---|
1995 | 25.6 |
1996 | 23.8 |
1997 | 25.7 |
1998 | 26.6 |
1999 | 26.5 |
2000 | 23.9 |
2001 | 23.32 |
2002 | 21.33 |
2003 | 16.72 |
2004 | 17.1 |
2005 | 16.36 |
2006 | 15.24 |
2007 | 14.2 |
2008 | 13.77 |
2009 | |
2010 | 13.21 |
2011 | 12.58 |
2012 | 12.37 |
2013 | 12.02 |
2014 | 11.86 |
2015 | 11.28 |
2016 | 10.29 |
2017 | |
2018 | 8.96 |