年度 | 实际值 |
---|---|
1995 | 33.9 |
1996 | 34.3 |
1997 | 32.07 |
1998 | 30.2 |
1999 | |
2000 | 36.7 |
2001 | 34.59 |
2002 | 32.85 |
2003 | 30.18 |
2004 | 30.59 |
2005 | 26.32 |
2006 | 23.1 |
2007 | 22.24 |
2008 | 21.72 |
2009 | |
2010 | 18.96 |
2011 | 17.16 |
2012 | 16.24 |
2013 | 15.41 |
2014 | 14.72 |
2015 | 14.56 |
2016 | 15.49 |
2017 | |
2018 | 12.34 |