年度 | 实际值 |
---|---|
1995 | 31.6 |
1996 | 21.8 |
1997 | 16.84 |
1998 | 20.4 |
1999 | 19.9 |
2000 | 21.5 |
2001 | 21.39 |
2002 | 20.74 |
2003 | 19.96 |
2004 | 18.32 |
2005 | 17.08 |
2006 | 15.61 |
2007 | |
2008 | 9.93 |
2009 | |
2010 | 9.56 |
2011 | 9.57 |
2012 | 9.51 |
2013 | 8.84 |
2014 | 21.52 |
2015 | 11.05 |
2016 | 13.78 |
2017 | 16.26 |
2018 | 9.54 |