年度 | 实际值 |
---|---|
1995 | 10.7 |
1996 | 11.3 |
1997 | 11.46 |
1998 | 11 |
1999 | 10.3 |
2000 | 9.5 |
2001 | 9.01 |
2002 | 8.43 |
2003 | 8.96 |
2004 | 7.8 |
2005 | 8.52 |
2006 | 8.12 |
2007 | 7.96 |
2008 | 7.49 |
2009 | |
2010 | 6.69 |
2011 | 6.43 |
2012 | 6.45 |
2013 | 6.24 |
2014 | 5.77 |
2015 | 5.86 |
2016 | 6.8 |
2017 | |
2018 | 5.77 |