年度 | 实际值 |
---|---|
1995 | 10 |
1996 | 10 |
1997 | 6.63 |
1998 | 8.2 |
1999 | 7.8 |
2000 | 7.7 |
2001 | 7.37 |
2002 | 7.1 |
2003 | 6.84 |
2004 | 6.26 |
2005 | 7.1 |
2006 | 6.99 |
2007 | 6.03 |
2008 | 5.45 |
2009 | |
2010 | 4.98 |
2011 | 4.47 |
2012 | 4.49 |
2013 | 4.6 |
2014 | 4.53 |
2015 | 4.7 |
2016 | 4.69 |
2017 | 2.97 |
2018 | 3.03 |