年度 | 实际值 |
---|---|
1995 | 9.1 |
1996 | 9.3 |
1997 | 8.82 |
1998 | 8.5 |
1999 | 8 |
2000 | 7.5 |
2001 | 7.11 |
2002 | 6.43 |
2003 | 6.03 |
2004 | 5.53 |
2005 | 5.04 |
2006 | 4.5 |
2007 | 3.99 |
2008 | 3.74 |
2009 | |
2010 | 3.5 |
2011 | 3.37 |
2012 | 3.27 |
2013 | 3.18 |
2014 | 2.98 |
2015 | 2.87 |
2016 | 2.69 |
2017 | |
2018 | 2.26 |