年度 | 实际值 |
---|---|
1995 | 2.4 |
1996 | 2.4 |
1997 | 37.36 |
1998 | 2 |
1999 | 1.9 |
2000 | 1.7 |
2001 | 1.57 |
2002 | 1.49 |
2003 | 1.65 |
2004 | 1.23 |
2005 | 14.35 |
2006 | 13.18 |
2007 | 10.6 |
2008 | 11.33 |
2009 | |
2010 | 10.91 |
2011 | 9.4 |
2012 | 10.17 |
2013 | 9.73 |
2014 | 8.92 |
2015 | 8.32 |
2016 | 8.06 |
2017 | 7.05 |
2018 | 7.07 |