年度 | 实际值 |
---|---|
1995 | 14.7 |
1996 | 18.7 |
1997 | 16.77 |
1998 | 16.6 |
1999 | 14.6 |
2000 | 14 |
2001 | 11.95 |
2002 | 11.22 |
2003 | 9.16 |
2004 | 8.24 |
2005 | 6.34 |
2006 | 5.79 |
2007 | 5.64 |
2008 | 5.71 |
2009 | |
2010 | 4.9 |
2011 | 5.03 |
2012 | 4.87 |
2013 | 4.97 |
2014 | 4.34 |
2015 | 4.08 |
2016 | 3.58 |
2017 | |
2018 | 3.73 |