年度 | 实际值 |
---|---|
1995 | 17.7 |
1996 | 15.9 |
1997 | 13.49 |
1998 | 12.8 |
1999 | 11.1 |
2000 | 11.4 |
2001 | 10.82 |
2002 | 9.64 |
2003 | 8.58 |
2004 | 8.2 |
2005 | 7.49 |
2006 | 6.32 |
2007 | 5.76 |
2008 | 5.26 |
2009 | |
2010 | 4.44 |
2011 | 6.45 |
2012 | 6.28 |
2013 | 6.13 |
2014 | 5.11 |
2015 | 4.88 |
2016 | 4.7 |
2017 | |
2018 | 4.06 |