年度 | 实际值 |
---|---|
1995 | 18.7 |
1996 | 16.8 |
1997 | 16.56 |
1998 | 14.9 |
1999 | 12.2 |
2000 | 11.4 |
2001 | 10.48 |
2002 | 9.71 |
2003 | 8.25 |
2004 | 9.16 |
2005 | 6.15 |
2006 | 5.75 |
2007 | 5.79 |
2008 | 6.32 |
2009 | |
2010 | 4.91 |
2011 | 5.73 |
2012 | 5.5 |
2013 | 5.29 |
2014 | 4.87 |
2015 | 4.65 |
2016 | 4.31 |
2017 | |
2018 | 3.55 |