年度 | 实际值 |
---|---|
1992 | 8 |
1993 | 8.9 |
1994 | |
1995 | 7.48 |
1996 | 7.5 |
1997 | 7.35 |
1998 | 3.87 |
1999 | 6.63 |
2000 | 15.99 |
2001 | 6.06 |
2002 | 5.33 |
2003 | 6.25 |
2004 | 5.41 |
2005 | 6.83 |
2006 | 7.97 |
2007 | 6.69 |
2008 | 5.67 |
2009 | |
2010 | 5.85 |
2011 | 6.8 |
2012 | 4.2 |
2013 | 7.1 |
2014 | 8.2 |
2015 | 9.3 |
2016 | 9.79 |
2017 | 1.2 |
2018 | 7.22 |