年度 | 实际值 |
---|---|
1995 | 18.7 |
1996 | 17.4 |
1997 | 16.65 |
1998 | 15.4 |
1999 | 14.6 |
2000 | 13.8 |
2001 | 13.12 |
2002 | 12.18 |
2003 | 11.29 |
2004 | 10.97 |
2005 | 9.78 |
2006 | 8.62 |
2007 | 7.8 |
2008 | 7.98 |
2009 | |
2010 | 8.01 |
2011 | 7.65 |
2012 | 7.37 |
2013 | 6.96 |
2014 | 6.15 |
2015 | 5.87 |
2016 | 5.58 |
2017 | |
2018 | 4.7 |