年度 | 实际值 |
---|---|
1995 | 16.9 |
1996 | 15.8 |
1997 | 15.13 |
1998 | 13.7 |
1999 | 10.4 |
2000 | 9.1 |
2001 | 7.66 |
2002 | 7.22 |
2003 | 6.55 |
2004 | 6.48 |
2005 | 5.65 |
2006 | 4.99 |
2007 | 5.83 |
2008 | 3.83 |
2009 | |
2010 | 3.83 |
2011 | 4.99 |
2012 | 4.83 |
2013 | 4.97 |
2014 | 6.21 |
2015 | 6.23 |
2016 | 6.16 |
2017 | 5.7 |
2018 | 5.99 |