年度 | 实际值 |
---|---|
1995 | 34.1 |
1996 | 35 |
1997 | 34.12 |
1998 | 32.6 |
1999 | 31 |
2000 | 29.5 |
2001 | 28.21 |
2002 | 25.27 |
2003 | 23.6 |
2004 | 25.09 |
2005 | 25.47 |
2006 | 23.52 |
2007 | 23.44 |
2008 | 23.57 |
2009 | |
2010 | 18.62 |
2011 | 16.76 |
2012 | 16.49 |
2013 | 15.6 |
2014 | 14.99 |
2015 | 15.22 |
2016 | 15.09 |
2017 | |
2018 | 11.06 |