年度 | 实际值 |
---|---|
1995 | 12 |
1996 | 12.2 |
1997 | 10.59 |
1998 | 10.5 |
1999 | 8.9 |
2000 | 6.5 |
2001 | 6.38 |
2002 | 6.1 |
2003 | 5.37 |
2004 | 4.8 |
2005 | 4.13 |
2006 | 3.67 |
2007 | 3.64 |
2008 | 3.41 |
2009 | |
2010 | 3.7 |
2011 | 3.71 |
2012 | 3.48 |
2013 | 3.61 |
2014 | 3.38 |
2015 | 3.41 |
2016 | 3.5 |
2017 | |
2018 | 3.53 |