年度 | 实际值 |
---|---|
1995 | 30.1 |
1996 | 28.6 |
1997 | 31.74 |
1998 | 25.9 |
1999 | |
2000 | 31.6 |
2001 | 29.5 |
2002 | 27.53 |
2003 | 26.02 |
2004 | 26.73 |
2005 | 26.63 |
2006 | 27.1 |
2007 | 25.99 |
2008 | 27.3 |
2009 | |
2010 | 20.51 |
2011 | 17.68 |
2012 | 16.29 |
2013 | 14.98 |
2014 | 13.49 |
2015 | 12.44 |
2016 | 11.88 |
2017 | |
2018 | 10.87 |