年度 | 实际值 |
---|---|
1995 | 25.3 |
1996 | 23.5 |
1997 | 15.13 |
1998 | 15.9 |
1999 | |
2000 | 22.7 |
2001 | 20.53 |
2002 | 18.41 |
2003 | 17.92 |
2004 | 15.54 |
2005 | 13.66 |
2006 | 11.66 |
2007 | 10.63 |
2008 | 9.92 |
2009 | |
2010 | 10.02 |
2011 | 9.8 |
2012 | 9.53 |
2013 | 9.79 |
2014 | 9.26 |
2015 | 9.24 |
2016 | 9.4 |
2017 | |
2018 | 8.86 |