年度 | 实际值 |
---|---|
1995 | 22.2 |
1996 | 22.5 |
1997 | 30.53 |
1998 | 21.4 |
1999 | 18.2 |
2000 | 17.6 |
2001 | 16.85 |
2002 | 15.68 |
2003 | 14.92 |
2004 | 13.7 |
2005 | 11.59 |
2006 | 10.48 |
2007 | 9.69 |
2008 | 9.1 |
2009 | |
2010 | 8.27 |
2011 | 7.18 |
2012 | 6.83 |
2013 | 6.51 |
2014 | 6.61 |
2015 | 6.59 |
2016 | 6.29 |
2017 | 6.09 |
2018 | 5.32 |