年度 | 实际值 |
---|---|
1995 | 18.3 |
1996 | 18.2 |
1997 | 14.93 |
1998 | 16.3 |
1999 | 15.2 |
2000 | 15.8 |
2001 | 14.43 |
2002 | 13.74 |
2003 | 12.48 |
2004 | 12.23 |
2005 | 10.99 |
2006 | 10.27 |
2007 | 10.91 |
2008 | 9.79 |
2009 | |
2010 | 9.02 |
2011 | 7.4 |
2012 | 7 |
2013 | 6.74 |
2014 | 6.61 |
2015 | 6.44 |
2016 | 6.45 |
2017 | 6.23 |
2018 | 5.99 |