年度 | 实际值 |
---|---|
1995 | 20.7 |
1996 | 26.5 |
1997 | 10.91 |
1998 | 27.1 |
1999 | 25.1 |
2000 | 22.2 |
2001 | 20.47 |
2002 | 17.27 |
2003 | 14.84 |
2004 | 13.46 |
2005 | 10.6 |
2006 | 9.47 |
2007 | 8.24 |
2008 | 7.48 |
2009 | |
2010 | 7.38 |
2011 | 7.13 |
2012 | 6.98 |
2013 | 7.19 |
2014 | 6.96 |
2015 | 7.03 |
2016 | 7.02 |
2017 | 7.67 |
2018 | 6.82 |