年度 | 实际值 |
---|---|
1992 | 7 |
1993 | 9.3 |
1994 | |
1995 | 11.33 |
1996 | 11.38 |
1997 | |
1998 | |
1999 | |
2000 | 7.13 |
2001 | 6.85 |
2002 | 6.3 |
2003 | 5.69 |
2004 | 5.42 |
2005 | 5.54 |
2006 | 5.87 |
2007 | 5.99 |
2008 | 6.15 |
2009 | 6.75 |
2010 | 5.89 |
2011 | 5.92 |
2012 | 5.98 |
2013 | 6 |
2014 | 6 |
2015 | 6.08 |
2016 | 8 |
2017 | 1.65 |
2018 | 6.83 |