年度 | 实际值 |
---|---|
1992 | 10.7 |
1993 | 9.9 |
1994 | |
1995 | 11.16 |
1996 | 10.84 |
1997 | |
1998 | |
1999 | |
2000 | 9.22 |
2001 | 7.74 |
2002 | 6.94 |
2003 | 5.94 |
2004 | 5.62 |
2005 | 4.97 |
2006 | 5.24 |
2007 | 4.46 |
2008 | 18.29 |
2009 | 5.11 |
2010 | 3.91 |
2011 | 3.93 |
2012 | 2.73 |
2013 | 2.64 |
2014 | 2.82 |
2015 | 2.96 |