年度 | 实际值 |
---|---|
1995 | 27.1 |
1996 | 25.8 |
1997 | 23.7 |
1998 | 17.4 |
1999 | 16.9 |
2000 | 15.5 |
2001 | 14.94 |
2002 | 14.32 |
2003 | 13.71 |
2004 | 13.78 |
2005 | 12.71 |
2006 | 11.54 |
2007 | 11.07 |
2008 | 10.83 |
2009 | |
2010 | 9.64 |
2011 | 8.03 |
2012 | 7.73 |
2013 | 6.57 |
2014 | 6.06 |
2015 | 6 |
2016 | 6.03 |
2017 | 7.95 |
2018 | 7.45 |