年度 | 实际值 |
---|---|
1995 | 26.7 |
1996 | 25.4 |
1997 | 24.3 |
1998 | 23.2 |
1999 | |
2000 | 27.4 |
2001 | 26.37 |
2002 | 25.59 |
2003 | 24.16 |
2004 | 25.91 |
2005 | 27.02 |
2006 | 25.76 |
2007 | 24.45 |
2008 | 22.74 |
2009 | |
2010 | 21.55 |
2011 | 20.08 |
2012 | 19.35 |
2013 | 18.85 |
2014 | 17.98 |
2015 | 16.85 |
2016 | 16.49 |
2017 | |
2018 | 14.25 |