年度 | 实际值 |
---|---|
1995 | 19.2 |
1996 | 17.3 |
1997 | 16.82 |
1998 | 14.6 |
1999 | 12.9 |
2000 | 12.4 |
2001 | 12.1 |
2002 | 11.36 |
2003 | 11.83 |
2004 | 12.23 |
2005 | 13.07 |
2006 | 12.17 |
2007 | 10.24 |
2008 | 9.27 |
2009 | |
2010 | 7.34 |
2011 | 8.62 |
2012 | 10.23 |
2013 | 13.16 |
2014 | 14.58 |
2015 | 16.09 |
2016 | 14.69 |
2017 | |
2018 | 12.35 |