年度 | 实际值 |
---|---|
1995 | 28.2 |
1996 | 29.9 |
1997 | 28.05 |
1998 | 26.8 |
1999 | 27 |
2000 | 23.6 |
2001 | 24.06 |
2002 | 24.37 |
2003 | 21.25 |
2004 | 21.24 |
2005 | 18.17 |
2006 | 18.18 |
2007 | 18.87 |
2008 | 19.66 |
2009 | |
2010 | 16.09 |
2011 | 15.6 |
2012 | 15.6 |
2013 | 15 |
2014 | 14.55 |
2015 | 14.56 |
2016 | 15.1 |
2017 | |
2018 | 16.79 |