年度 | 实际值 |
---|---|
1995 | 10.3 |
1996 | 9 |
1997 | 8.44 |
1998 | 7.7 |
1999 | 8.4 |
2000 | 8.2 |
2001 | 8.02 |
2002 | 7.67 |
2003 | 7.32 |
2004 | 7.04 |
2005 | 7.28 |
2006 | 6.75 |
2007 | 6.69 |
2008 | 6.94 |
2009 | |
2010 | 5.67 |
2011 | 5.33 |
2012 | 5.29 |
2013 | 4.97 |
2014 | 4.89 |
2015 | 4.74 |
2016 | 4.66 |
2017 | |
2018 | 4.27 |