年度 | 实际值 |
---|---|
1995 | 32.4 |
1996 | 29.7 |
1997 | 26.49 |
1998 | 26 |
1999 | 23.7 |
2000 | 23.1 |
2001 | 22.07 |
2002 | 20.46 |
2003 | 19.26 |
2004 | 18.84 |
2005 | 16.35 |
2006 | 14.94 |
2007 | 14.59 |
2008 | 13.69 |
2009 | |
2010 | 12.72 |
2011 | 11.91 |
2012 | 11.42 |
2013 | 11.01 |
2014 | 10.77 |
2015 | 10.38 |
2016 | 9.78 |
2017 | |
2018 | 8.39 |