年度 | 实际值 |
---|---|
1995 | 30.3 |
1996 | 33.4 |
1997 | 33.28 |
1998 | 32.8 |
1999 | 30.8 |
2000 | 29 |
2001 | 26.08 |
2002 | 22.54 |
2003 | 19.15 |
2004 | 18.02 |
2005 | 14.22 |
2006 | 12.5 |
2007 | 10.97 |
2008 | 10.03 |
2009 | |
2010 | 9.63 |
2011 | 9.84 |
2012 | 9.74 |
2013 | 10.28 |
2014 | 9.94 |
2015 | 10.16 |
2016 | 10.21 |
2017 | |
2018 | 10.83 |