年度 | 实际值 |
---|---|
1995 | 26.4 |
1996 | 24.6 |
1997 | 21.67 |
1998 | 21.6 |
1999 | 18.4 |
2000 | 17.6 |
2001 | 17.75 |
2002 | 16.26 |
2003 | 14.93 |
2004 | 15.99 |
2005 | 11.97 |
2006 | 11.52 |
2007 | 11.35 |
2008 | 11.74 |
2009 | |
2010 | 11.47 |
2011 | 11.44 |
2012 | 11.35 |
2013 | 10.39 |
2014 | 10.14 |
2015 | 9.62 |
2016 | 8.71 |
2017 | |
2018 | 7.5 |